LAB816
Collect
Second-morning void or 24-hour urine. Refrigerate during collection. Collect without preservative.
Patient Preparation
For monitoring therapy, a baseline specimen should be collected prior to initiation of therapy. Subsequent specimens for comparison should be collected at the same time of day as the baseline specimen.
Specimen Preparation
Transfer a 1 mL aliquot of urine from a well-mixed, second-morning void or 24-hour collection to an ARUP Standard Transport Tube. (Min: 0.5 mL)
Unacceptable Conditions
Specimens contaminated with blood or extensive hemolysis.
Storage/Transport Temperature
Frozen.
Stability (from collection to initiation)
Ambient: 24 hours; Refrigerated: 1 week; Frozen: 2 years
Laboratories.Performed
Tue-Sat
Methodology
Quantitative Chemiluminescent Immunoassay
Reported
1-4 days
Synonyms
- NTx
- Cross-Linked N-Telopeptide
- LAB816
- NTX URINE
Additional Technical Information
Reference Interval
| Age | Male | Female |
|---|---|---|
| 7-9 years | 167-578 nM BCE/mM creatinine | 201-626 nM BCE/mM creatinine |
| 10-12 years | 152-505 nM BCE/mM creatinine | 173-728 nM BCE/mM creatinine |
| 13-15 years | 103-776 nM BCE/mM creatinine | 38-515 nM BCE/mM creatinine |
| 16-17 years | 34-313 nM BCE/mM creatinine | 20-144 nM BCE/mM creatinine |
| 18 years and older | 21-83 nM BCE/mM creatinine | |
| Premenopausal | 17-94 nM BCE/mM creatinine | |
| Postmenopausal | 26-124 nM BCE/mM creatinine |
Interpretive Data
NTx Units = nM BCE/mM creatinine
A decrease of 30-40% from the NTx baseline after three months of therapy is a typical response to anti-resorptive therapy.
NTx = Cross-linked N-telopeptide of Type I Collagen
BCE = Bone Collagen Equivalent
A decrease of 30-40% from the NTx baseline after three months of therapy is a typical response to anti-resorptive therapy.
NTx = Cross-linked N-telopeptide of Type I Collagen
BCE = Bone Collagen Equivalent
CPT Codes
82523
| Collection |
LAB816
Collect
Second-morning void or 24-hour urine. Refrigerate during collection. Collect without preservative.
Patient Preparation
For monitoring therapy, a baseline specimen should be collected prior to initiation of therapy. Subsequent specimens for comparison should be collected at the same time of day as the baseline specimen.
Specimen Preparation
Transfer a 1 mL aliquot of urine from a well-mixed, second-morning void or 24-hour collection to an ARUP Standard Transport Tube. (Min: 0.5 mL)
Unacceptable Conditions
Specimens contaminated with blood or extensive hemolysis.
Storage/Transport Temperature
Frozen.
Stability (from collection to initiation)
Ambient: 24 hours; Refrigerated: 1 week; Frozen: 2 years
| Ordering |
Performed
Tue-Sat
Methodology
Quantitative Chemiluminescent Immunoassay
Reported
1-4 days
Synonyms
- NTx
- Cross-Linked N-Telopeptide
- LAB816
- NTX URINE
Additional Technical Information
| Result Interpretation |
Reference Interval
| Age | Male | Female |
|---|---|---|
| 7-9 years | 167-578 nM BCE/mM creatinine | 201-626 nM BCE/mM creatinine |
| 10-12 years | 152-505 nM BCE/mM creatinine | 173-728 nM BCE/mM creatinine |
| 13-15 years | 103-776 nM BCE/mM creatinine | 38-515 nM BCE/mM creatinine |
| 16-17 years | 34-313 nM BCE/mM creatinine | 20-144 nM BCE/mM creatinine |
| 18 years and older | 21-83 nM BCE/mM creatinine | |
| Premenopausal | 17-94 nM BCE/mM creatinine | |
| Postmenopausal | 26-124 nM BCE/mM creatinine |
Interpretive Data
NTx Units = nM BCE/mM creatinine
A decrease of 30-40% from the NTx baseline after three months of therapy is a typical response to anti-resorptive therapy.
NTx = Cross-linked N-telopeptide of Type I Collagen
BCE = Bone Collagen Equivalent
A decrease of 30-40% from the NTx baseline after three months of therapy is a typical response to anti-resorptive therapy.
NTx = Cross-linked N-telopeptide of Type I Collagen
BCE = Bone Collagen Equivalent
| Administrative |
CPT Codes
82523