TSH ULTRASENSITIVE

LAB129

TSH

Collect

One 4.5 mL green top with gel (PST), (lithium heparin plasma).

Pediatric Collection

At least 0.5 mL whole blood in green top microtainer with gel, (lithium heparin plasma) or other heparin tube.

Unacceptable Conditions

Grossly hemolyzed samples; EDTA anticoagulant; sample not properly identified; insufficient sample volume; improperly stored.

 

Storage/Transport Temperature

Internal: Deliver to lab immediately at ambient temperature.
Offsite: Centrifuge within 30 minutes of collection.  If delivered to lab within 4 hours, transport to lab at 2-8 degrees C. If delivered to lab in more than 4 hours, place at least 1.0 mL plasma in aliquot container and transport to the lab frozen.

Stability (from collection to initiation)

Before centrifugation: 1 hour.

After centrifugation: Ambient, 2 hours; Refrigerated, 4 hours.

 

Plasma aliquot: Ambient, 8 hours; Refrigerated, 48 hours; Frozen (-20 degrees C), 1 month.

Performed by

PCL Clinical Laboratory - Core

Performed

Daily

Methodology

Chemiluminescent EIA

Reported

Daily

Synonyms

  • LAB129
  • THYROID STIMULATING HORMONE

Reference Interval

0.34 - 5.60 mIU/L

Interpretive Data

Testing is performed by Access HYPERsensitive hTSH (3rd generation).  NHANES III data suggests that TSH levels for thyroid disease-free adults are generally between 0.45 and 4.12 mIU/L and are age-dependent.  Reference intervals for pregnant patients and neonates have not been validated.

Performed by

PCL Clinical Laboratory - Core

CPT Codes

84443

Collection

LAB129

TSH

Collect

One 4.5 mL green top with gel (PST), (lithium heparin plasma).

Pediatric Collection

At least 0.5 mL whole blood in green top microtainer with gel, (lithium heparin plasma) or other heparin tube.

Unacceptable Conditions

Grossly hemolyzed samples; EDTA anticoagulant; sample not properly identified; insufficient sample volume; improperly stored.

 

Storage/Transport Temperature

Internal: Deliver to lab immediately at ambient temperature.
Offsite: Centrifuge within 30 minutes of collection.  If delivered to lab within 4 hours, transport to lab at 2-8 degrees C. If delivered to lab in more than 4 hours, place at least 1.0 mL plasma in aliquot container and transport to the lab frozen.

Stability (from collection to initiation)

Before centrifugation: 1 hour.

After centrifugation: Ambient, 2 hours; Refrigerated, 4 hours.

 

Plasma aliquot: Ambient, 8 hours; Refrigerated, 48 hours; Frozen (-20 degrees C), 1 month.

Performed by

PCL Clinical Laboratory - Core

Ordering

Performed

Daily

Methodology

Chemiluminescent EIA

Reported

Daily

Synonyms

  • LAB129
  • THYROID STIMULATING HORMONE
Result Interpretation

Reference Interval

0.34 - 5.60 mIU/L

Interpretive Data

Testing is performed by Access HYPERsensitive hTSH (3rd generation).  NHANES III data suggests that TSH levels for thyroid disease-free adults are generally between 0.45 and 4.12 mIU/L and are age-dependent.  Reference intervals for pregnant patients and neonates have not been validated.

Performed by

PCL Clinical Laboratory - Core

Administrative

CPT Codes

84443

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