Tests Catalogs

RHEUMATOID FACTOR

LAB206

 

Collect

One 5.0 mL gold top with gel (SST), (clot activator serum)

Pediatric Collection

Minimum volume 0.5 mL

Unacceptable Conditions

Sample not properly identified; incorrect container; insufficient sample volume.

Storage/Transport Temperature

Internal: Deliver to laboratory immediately at ambient temperature.

Offsite: Allow to clot for 30 minutes, immediately centrifuge, then transport to lab at 4-8 degrees C.

Stability (from collection to initiation)

After centrifugation: Ambient: 24 hours; Refrigerated: 8 days; Frozen (-20 degrees C): 3 months (avoid repeated freezing and thawing)

Performed by

PCL Clinical Laboratory - Core Laboratory

Performed

Upon receipt

Methodology

Turbidimetry

Reported

Same day

Synonyms

  • LAB206
  • RA
  • RF
  • Rheumatoid Arthritis Factor

Reference Interval

0-14 IU/mL

Performed by

PCL Clinical Laboratory - Core Laboratory

CPT Codes

86431
Collection

LAB206

 

Collect

One 5.0 mL gold top with gel (SST), (clot activator serum)

Pediatric Collection

Minimum volume 0.5 mL

Unacceptable Conditions

Sample not properly identified; incorrect container; insufficient sample volume.

Storage/Transport Temperature

Internal: Deliver to laboratory immediately at ambient temperature.

Offsite: Allow to clot for 30 minutes, immediately centrifuge, then transport to lab at 4-8 degrees C.

Stability (from collection to initiation)

After centrifugation: Ambient: 24 hours; Refrigerated: 8 days; Frozen (-20 degrees C): 3 months (avoid repeated freezing and thawing)

Performed by

PCL Clinical Laboratory - Core Laboratory

Ordering

Performed

Upon receipt

Methodology

Turbidimetry

Reported

Same day

Synonyms

  • LAB206
  • RA
  • RF
  • Rheumatoid Arthritis Factor
Result Interpretation

Reference Interval

0-14 IU/mL

Performed by

PCL Clinical Laboratory - Core Laboratory

Administrative

CPT Codes

86431

RISPERIDONE + METABOLITE

LAB3225

 

Collect

Lavender (EDTA), pink (K2EDTA) or plain red.

Patient Preparation

Pre-dose (trough) draw - At steady state concentration.

Specimen Preparation

Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Unacceptable Conditions

Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution).

Storage/Transport Temperature

Refrigerated.

Stability (from collection to initiation)

Ambient: 2 weeks; Refrigerated: 2 weeks; Frozen: 2 months

Remarks

N/A

Performed

Sun, Wed

Methodology

Quantitative Liquid Chromatography-Tandem Mass Spectrometry

Reported

1-5 days

Synonyms

  • LAB3225
  • risperdal blood level
  • risperidone blood level
  • 9-Hydroxyrisperidone
  • Risperdal{R}
  • RISPERIDONE

Additional Technical Information

Ordering Recommendations

Optimize drug therapy and monitor patient adherence.

Reference Interval

Therapeutic rangeNot well established
Total (Risperidone and Metabolite)20-60 ng/mL
Toxic rangeNot well established

Interpretive Data

Adverse effects to risperidone therapy may include headache, nausea, dizziness, tachycardia, orthostatic hypotension and dyskinesia.

CPT Codes

80342 (Alt code: G0480)
Collection

LAB3225

 

Collect

Lavender (EDTA), pink (K2EDTA) or plain red.

Patient Preparation

Pre-dose (trough) draw - At steady state concentration.

Specimen Preparation

Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Unacceptable Conditions

Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution).

Storage/Transport Temperature

Refrigerated.

Stability (from collection to initiation)

Ambient: 2 weeks; Refrigerated: 2 weeks; Frozen: 2 months

Remarks

N/A
Ordering

Performed

Sun, Wed

Methodology

Quantitative Liquid Chromatography-Tandem Mass Spectrometry

Reported

1-5 days

Synonyms

  • LAB3225
  • risperdal blood level
  • risperidone blood level
  • 9-Hydroxyrisperidone
  • Risperdal{R}
  • RISPERIDONE

Additional Technical Information

Ordering Recommendations

Optimize drug therapy and monitor patient adherence.
Result Interpretation

Reference Interval

Therapeutic rangeNot well established
Total (Risperidone and Metabolite)20-60 ng/mL
Toxic rangeNot well established

Interpretive Data

Adverse effects to risperidone therapy may include headache, nausea, dizziness, tachycardia, orthostatic hypotension and dyskinesia.

Administrative

CPT Codes

80342 (Alt code: G0480)

ROCKY MOUNTAIN SPOTTED FEVER G

LAB3179

 

Collect

Serum separator tube.

Specimen Preparation

Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.05 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as "acute" or "convalescent."

Unacceptable Conditions

Contaminated, hemolyzed, or severely lipemic specimens.

Storage/Transport Temperature

Refrigerated.

Stability (from collection to initiation)

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Performed

Mon-Fri

Methodology

Semi-Quantitative Indirect Fluorescent Antibody

Reported

1-4 days

Synonyms

  • Rocky Mountain Spotted Fever Antibody, IgG
  • LAB3179
  • RMSF IGG

Ordering Recommendations

Detects antibodies during convalescent phase.

Reference Interval

Less than 1:64: Negative - No significant level of Rickettsia rickettsii Antibody, IgG detected.
1:64 - 1:128: Low Positive - Presence of Rickettsia rickettsii Antibody, IgG detected, suggestive of current or past infection.
1:256 or greater: Positive - Presence of Rickettsia rickettsii Antibody, IgG suggestive of recent or current infection.

Interpretive Data

The best evidence for current infection is a significant change on two appropriately timed specimens, where both tests are done in the same laboratory at the same time.

CPT Codes

86757
Collection

LAB3179

 

Collect

Serum separator tube.

Specimen Preparation

Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.05 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as "acute" or "convalescent."

Unacceptable Conditions

Contaminated, hemolyzed, or severely lipemic specimens.

Storage/Transport Temperature

Refrigerated.

Stability (from collection to initiation)

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Ordering

Performed

Mon-Fri

Methodology

Semi-Quantitative Indirect Fluorescent Antibody

Reported

1-4 days

Synonyms

  • Rocky Mountain Spotted Fever Antibody, IgG
  • LAB3179
  • RMSF IGG

Ordering Recommendations

Detects antibodies during convalescent phase.
Result Interpretation

Reference Interval

Less than 1:64: Negative - No significant level of Rickettsia rickettsii Antibody, IgG detected.
1:64 - 1:128: Low Positive - Presence of Rickettsia rickettsii Antibody, IgG detected, suggestive of current or past infection.
1:256 or greater: Positive - Presence of Rickettsia rickettsii Antibody, IgG suggestive of recent or current infection.

Interpretive Data

The best evidence for current infection is a significant change on two appropriately timed specimens, where both tests are done in the same laboratory at the same time.

Administrative

CPT Codes

86757

ROCKY MOUNTAIN SPOTTED FEVER M

LAB3180

 

Collect

Serum separator tube.

Specimen Preparation

Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.1 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as acute or convalescent.

Unacceptable Conditions

Contaminated, hemolyzed, or severely lipemic specimens.

Storage/Transport Temperature

Refrigerated.

Stability (from collection to initiation)

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Performed

Mon-Fri

Methodology

Semi-Quantitative Indirect Fluorescent Antibody

Reported

1-4 days

Synonyms

  • Rocky Mountain Spotted Fever Antibody, IgM
  • LAB3180
  • RMSF IGM

Ordering Recommendations

Detects antibodies during acute phase; paired concurrent specimen with IgG reduces false positive rate. Convalescent sera may be required for diagnosis.

Reference Interval

Less than 1:64: Negative - No significant level of Rickettsia rickettsii Antibody, IgM detected.
1:64 or greater: Positive - Presence of Rickettsia rickettsii Antibody, IgM detected, which may indicate a current or recent infection; however, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection.

Interpretive Data

The CDC does not use IgM results for routine diagnostic testing of Rocky Mountain Spotted Fever, as the response may not be specific for the agent (resulting in false positives) and the IgM response may be persistent from past infection.

CPT Codes

86757
Collection

LAB3180

 

Collect

Serum separator tube.

Specimen Preparation

Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.1 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as acute or convalescent.

Unacceptable Conditions

Contaminated, hemolyzed, or severely lipemic specimens.

Storage/Transport Temperature

Refrigerated.

Stability (from collection to initiation)

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Ordering

Performed

Mon-Fri

Methodology

Semi-Quantitative Indirect Fluorescent Antibody

Reported

1-4 days

Synonyms

  • Rocky Mountain Spotted Fever Antibody, IgM
  • LAB3180
  • RMSF IGM

Ordering Recommendations

Detects antibodies during acute phase; paired concurrent specimen with IgG reduces false positive rate. Convalescent sera may be required for diagnosis.
Result Interpretation

Reference Interval

Less than 1:64: Negative - No significant level of Rickettsia rickettsii Antibody, IgM detected.
1:64 or greater: Positive - Presence of Rickettsia rickettsii Antibody, IgM detected, which may indicate a current or recent infection; however, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection.

Interpretive Data

The CDC does not use IgM results for routine diagnostic testing of Rocky Mountain Spotted Fever, as the response may not be specific for the agent (resulting in false positives) and the IgM response may be persistent from past infection.

Administrative

CPT Codes

86757

ROTAVIRUS ANTIGEN - STOOL

LAB443

 

Collect

Stool.

Specimen Preparation

Transfer 5 g stool to an unpreserved stool transport vial (ARUP Supply #40910). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 1 g)

Unacceptable Conditions

Diapers. Specimens in media or preservatives.

Storage/Transport Temperature

Frozen.

Stability (from collection to initiation)

Ambient: 2 hours; Refrigerated: 72 hours; Frozen: 1 week

Performed

Sun-Sat

Methodology

Qualitative Enzyme Immunoassay

Reported

Within 24 hours

Synonyms

  • LAB443

Ordering Recommendations

Diagnose rotavirus-associated gastroenteritis. For antigen testing panel that includes adenovirus and rotavirus, refer to Rotavirus and Adenovirus 40-41 Antigens (0065067).

Reference Interval

Negative

CPT Codes

87425
Collection

LAB443

 

Collect

Stool.

Specimen Preparation

Transfer 5 g stool to an unpreserved stool transport vial (ARUP Supply #40910). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. (Min: 1 g)

Unacceptable Conditions

Diapers. Specimens in media or preservatives.

Storage/Transport Temperature

Frozen.

Stability (from collection to initiation)

Ambient: 2 hours; Refrigerated: 72 hours; Frozen: 1 week
Ordering

Performed

Sun-Sat

Methodology

Qualitative Enzyme Immunoassay

Reported

Within 24 hours

Synonyms

  • LAB443

Ordering Recommendations

Diagnose rotavirus-associated gastroenteritis. For antigen testing panel that includes adenovirus and rotavirus, refer to Rotavirus and Adenovirus 40-41 Antigens (0065067).
Result Interpretation

Reference Interval

Negative
Administrative

CPT Codes

87425

RPR WITH REFLEX TO TITER

Collect

One 4.5 mL Red or Gold top tube with gel separator (SST).

Pediatric Collection

1 mL serum.

Unacceptable Conditions

Specimen not properly identified; incorrect container; insufficient sample volume; specimen grossly hemolyzed or lipemic.

Storage/Transport Temperature

Internal: Deliver to lab immediately.
Offsite: Allow to clot for 30 minutes before centrifuging. Centrifuge within 2 hours of collection. Transport at ambient temperature if tested within 24 hours. Place serum in aliquot tube and transport frozen if not tested within 24 hours.

Stability (from collection to initiation)

Whole blood: Ambient, 1 hour; Refrigerated, 1 hour; Frozen, unacceptable.

Serum aliquot: Ambient, 24 hours; Refrigerated, 5 days; Frozen (-20 degrees C), 1 month

Remarks

RPR titer is performed on reactive samples.
Limitations: This is a nontreponemal test and is associated with false-positive reactions due to intercurrent infections, pregnancy, drug addiction, collagen-vascular diseases, and Gaucher's disease. This is a screening test for syphilis and detects antibodies to reagin. The antibodies typically develop within 4-6 weeks of inoculation, peak during the secondary phase of the disease, and then decrease. Antibodies also decrease with treatment. RPR is more sensitive than VDRL and ART. 93% of patients with primary syphilis will have positive tests. Because of the high incidence of false positive tests, any reactive serum should be further tested by a treponemal-specific test, preferably FTA-ABS. RPR should not be performed on CSF.

Performed by

PCL Clinical Laboratory - Toxicology

Performed

Monday through Friday

Methodology

Latex agglutination.

Reported

Same day

Synonyms

  • Rapid Plasma Reagin
  • -305 RPR

Reference Interval

Non Reactive

Performed by

PCL Clinical Laboratory - Toxicology

CPT Codes

86592; if reactive RPR titer will be billed 86953; if RPR Titer is reactive TP-PA 86780 will be billed.

Collection

Collect

One 4.5 mL Red or Gold top tube with gel separator (SST).

Pediatric Collection

1 mL serum.

Unacceptable Conditions

Specimen not properly identified; incorrect container; insufficient sample volume; specimen grossly hemolyzed or lipemic.

Storage/Transport Temperature

Internal: Deliver to lab immediately.
Offsite: Allow to clot for 30 minutes before centrifuging. Centrifuge within 2 hours of collection. Transport at ambient temperature if tested within 24 hours. Place serum in aliquot tube and transport frozen if not tested within 24 hours.

Stability (from collection to initiation)

Whole blood: Ambient, 1 hour; Refrigerated, 1 hour; Frozen, unacceptable.

Serum aliquot: Ambient, 24 hours; Refrigerated, 5 days; Frozen (-20 degrees C), 1 month

Remarks

RPR titer is performed on reactive samples.
Limitations: This is a nontreponemal test and is associated with false-positive reactions due to intercurrent infections, pregnancy, drug addiction, collagen-vascular diseases, and Gaucher's disease. This is a screening test for syphilis and detects antibodies to reagin. The antibodies typically develop within 4-6 weeks of inoculation, peak during the secondary phase of the disease, and then decrease. Antibodies also decrease with treatment. RPR is more sensitive than VDRL and ART. 93% of patients with primary syphilis will have positive tests. Because of the high incidence of false positive tests, any reactive serum should be further tested by a treponemal-specific test, preferably FTA-ABS. RPR should not be performed on CSF.

Performed by

PCL Clinical Laboratory - Toxicology

Ordering

Performed

Monday through Friday

Methodology

Latex agglutination.

Reported

Same day

Synonyms

  • Rapid Plasma Reagin
  • -305 RPR
Result Interpretation

Reference Interval

Non Reactive

Performed by

PCL Clinical Laboratory - Toxicology

Administrative

CPT Codes

86592; if reactive RPR titer will be billed 86953; if RPR Titer is reactive TP-PA 86780 will be billed.

RSV QUAL BY PCR

LAB3347
UHRSVPCR

 

Collect

Respiratory sample submitted in a sterile container, in sterile saline, sterile PBS, or viral transport media. Do NOT use wood-shafted or calcium alginate swabs.

For PCLealth providers: Flocked swabs (Lawson #63252) and M6 Viral Transport Media (Lawson # 64758) may be used for specimen collection. 

Acceptable specimens include nasppharyngeal swabs, nasal washes, bronchial washes, BAL (bronchoalveolar lavage), and CSF. 
Specimen source must be on order or requisition.

Pediatric Collection

At least 1.0 mL of sample in a sterile container.

Unacceptable Conditions

Specimen not properly identified; incorrect container; insufficient sample volume; contaminated specimen; improper storage conditions; specimen submitted in fixative; specimen sources not identified above as acceptable.

Storage/Transport Temperature

Internal: Deliver to lab immediately.
Offsite: Transport refrigerated or on ice.  Transport same day.  If delivery is not expected within 24 hours, freeze at -70 degreees C and ship on dry ice.

Stability (from collection to initiation)

Ambient: Unacceptable; Refrigerated: 72 hours; Frozen (-70 degrees C): 6 months.

Performed by

PCL Clinical Laboratory - Molecular Diagnostics

Performed

Daily

Methodology

Real-time polymerase chain reaction (PCR)

Reported

Same day

Synonyms

  • UHRSVPCR
  • Respiratory Syncytial Virus PCR

Interpretive Data

Not Detected (negative)
Detected (positive)

Performed by

PCL Clinical Laboratory - Molecular Diagnostics

CPT Codes

87798
Collection
LAB3347
UHRSVPCR

 

Collect

Respiratory sample submitted in a sterile container, in sterile saline, sterile PBS, or viral transport media. Do NOT use wood-shafted or calcium alginate swabs.

For PCLealth providers: Flocked swabs (Lawson #63252) and M6 Viral Transport Media (Lawson # 64758) may be used for specimen collection. 

Acceptable specimens include nasppharyngeal swabs, nasal washes, bronchial washes, BAL (bronchoalveolar lavage), and CSF. 
Specimen source must be on order or requisition.

Pediatric Collection

At least 1.0 mL of sample in a sterile container.

Unacceptable Conditions

Specimen not properly identified; incorrect container; insufficient sample volume; contaminated specimen; improper storage conditions; specimen submitted in fixative; specimen sources not identified above as acceptable.

Storage/Transport Temperature

Internal: Deliver to lab immediately.
Offsite: Transport refrigerated or on ice.  Transport same day.  If delivery is not expected within 24 hours, freeze at -70 degreees C and ship on dry ice.

Stability (from collection to initiation)

Ambient: Unacceptable; Refrigerated: 72 hours; Frozen (-70 degrees C): 6 months.

Performed by

PCL Clinical Laboratory - Molecular Diagnostics
Ordering

Performed

Daily

Methodology

Real-time polymerase chain reaction (PCR)

Reported

Same day

Synonyms

  • UHRSVPCR
  • Respiratory Syncytial Virus PCR
Result Interpretation

Interpretive Data

Not Detected (negative)
Detected (positive)

Performed by

PCL Clinical Laboratory - Molecular Diagnostics
Administrative

CPT Codes

87798

RSV RAPID ANTIGEN

Effective 12/2016:  Testing no longer available at PCL Lab.
Please use RSV PCR order:   LAB3347

 

Collect

Nasopharyngeal swabs (other than calcium alginate), nasal washes, tracheal aspirates, BALs. NP swabs submitted dry, in sterile saline or viral transport media (M6).

Pediatric Collection

0.5 mL minimum volume.

Unacceptable Conditions

Specimen improperly identified; incorrect container (calcium alginate swabs); insufficient sample volume; non-respiratory specimens; excessively mucoid or bloody specimens.

Storage/Transport Temperature

Internal: Deliver to lab immediately.
Offsite: Transport same day refrigerated or on ice.

Stability (from collection to initiation)

Refrigerated: 24 hours.

Remarks

Interfering substances include excessive mucus and gross blood.

Performed by

PCL Clinical Laboratory - Virology

Performed

Daily

Methodology

Rapid immunochromatographic assay for the qualitative detection of RSV fusion protein antigen.

Reported

Same day

Synonyms

  • LAB3268
  • Respiratory Syncytial Antigen

Performed by

PCL Clinical Laboratory - Virology

CPT Codes

87807

Collection

Effective 12/2016:  Testing no longer available at PCL Lab.
Please use RSV PCR order:   LAB3347

 

Collect

Nasopharyngeal swabs (other than calcium alginate), nasal washes, tracheal aspirates, BALs. NP swabs submitted dry, in sterile saline or viral transport media (M6).

Pediatric Collection

0.5 mL minimum volume.

Unacceptable Conditions

Specimen improperly identified; incorrect container (calcium alginate swabs); insufficient sample volume; non-respiratory specimens; excessively mucoid or bloody specimens.

Storage/Transport Temperature

Internal: Deliver to lab immediately.
Offsite: Transport same day refrigerated or on ice.

Stability (from collection to initiation)

Refrigerated: 24 hours.

Remarks

Interfering substances include excessive mucus and gross blood.

Performed by

PCL Clinical Laboratory - Virology

Ordering

Performed

Daily

Methodology

Rapid immunochromatographic assay for the qualitative detection of RSV fusion protein antigen.

Reported

Same day

Synonyms

  • LAB3268
  • Respiratory Syncytial Antigen
Result Interpretation

Performed by

PCL Clinical Laboratory - Virology

Administrative

CPT Codes

87807

RUBELLA IGG ANTIBODY

LAB496

 

Collect

One 4.5 mL Red or Gold top tube with gel separator (SST).

Pediatric Collection

1 mL serum.

Unacceptable Conditions

Specimen not properly identified; incorrect container; insufficient sample volume.

Storage/Transport Temperature

Internal: Deliver to lab immediately.
Offsite: Allow to clot for 30 minutes before centrifuging. Centrifuge within 2 hours of collection. Transport refrigerated.

Stability (from collection to initiation)

Ambient: 2 days; Refrigerated: 7 days.

Performed by

PCL Clinical Laboratory - Core

Performed

Upon receipt

Methodology

Chemilumenescent Immunoassay

Reported

Same day

Synonyms

  • LAB496

Reference Interval

Non-reactive

Interpretive Data

An equivocal result may be due to very low levels of circulating IgG during the acute stage of infection. Obtain a new specimen for repeat testing in 10 to 14 days, if clinically indicated or to demonstrate IgG seroconversion if recently vaccinated.

Performed by

PCL Clinical Laboratory - Core

CPT Codes

86762

Collection

LAB496

 

Collect

One 4.5 mL Red or Gold top tube with gel separator (SST).

Pediatric Collection

1 mL serum.

Unacceptable Conditions

Specimen not properly identified; incorrect container; insufficient sample volume.

Storage/Transport Temperature

Internal: Deliver to lab immediately.
Offsite: Allow to clot for 30 minutes before centrifuging. Centrifuge within 2 hours of collection. Transport refrigerated.

Stability (from collection to initiation)

Ambient: 2 days; Refrigerated: 7 days.

Performed by

PCL Clinical Laboratory - Core

Ordering

Performed

Upon receipt

Methodology

Chemilumenescent Immunoassay

Reported

Same day

Synonyms

  • LAB496
Result Interpretation

Reference Interval

Non-reactive

Interpretive Data

An equivocal result may be due to very low levels of circulating IgG during the acute stage of infection. Obtain a new specimen for repeat testing in 10 to 14 days, if clinically indicated or to demonstrate IgG seroconversion if recently vaccinated.

Performed by

PCL Clinical Laboratory - Core

Administrative

CPT Codes

86762

RUBELLA IGM ANTIBODY

LAB865

 

Collect

Serum separator tube.

Specimen Preparation

Allow specimen to clot completely at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of acute specimens. Mark specimens plainly as "acute" or "convalescent."

Unacceptable Conditions

Plasma or urine. Contaminated, heat-inactivated, or hemolyzed specimens.

Storage/Transport Temperature

Refrigerated.

Stability (from collection to initiation)

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Performed

Sun-Sat

Methodology

Semi-Quantitative Chemiluminescent Immunoassay

Reported

Within 24 hours

Synonyms

  • LAB865

Ordering Recommendations

Not recommended as a stand-alone test. Rubella Antibodies, IgG and IgM (0050552) is preferred.

Reference Interval

19.9 AU/mL or less:Not Detected.
20.0 - 24.9 AU/mL:Indeterminate - Repeat testing in 10-14 days may be helpful.
25.0 AU/mL or greater:Detected - IgM antibody to rubella detected, which may indicate a current or recent infection or immunization.

Interpretive Data

Testing immediately post-exposure is of no value without a later convalescent specimen. While the presence of IgM antibodies suggests current or recent infection, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection or immunization.

The magnitude of the measured result is not indicative of the amount of antibody present.

CPT Codes

86762
Collection

LAB865

 

Collect

Serum separator tube.

Specimen Preparation

Allow specimen to clot completely at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of acute specimens. Mark specimens plainly as "acute" or "convalescent."

Unacceptable Conditions

Plasma or urine. Contaminated, heat-inactivated, or hemolyzed specimens.

Storage/Transport Temperature

Refrigerated.

Stability (from collection to initiation)

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Ordering

Performed

Sun-Sat

Methodology

Semi-Quantitative Chemiluminescent Immunoassay

Reported

Within 24 hours

Synonyms

  • LAB865

Ordering Recommendations

Not recommended as a stand-alone test. Rubella Antibodies, IgG and IgM (0050552) is preferred.
Result Interpretation

Reference Interval

19.9 AU/mL or less:Not Detected.
20.0 - 24.9 AU/mL:Indeterminate - Repeat testing in 10-14 days may be helpful.
25.0 AU/mL or greater:Detected - IgM antibody to rubella detected, which may indicate a current or recent infection or immunization.

Interpretive Data

Testing immediately post-exposure is of no value without a later convalescent specimen. While the presence of IgM antibodies suggests current or recent infection, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection or immunization.

The magnitude of the measured result is not indicative of the amount of antibody present.

Administrative

CPT Codes

86762

More Articles...