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HelpN-Telopeptide Cross-links (NTx), Urine
Useful For
Evaluation of osteoporosis and assessment of antiresorptive therapy
Special Instructions
Values obtained with different assay methods should not be used interchangeably in serial testing. It is recommended that only one assay method be used consistently to monitor each patient's course of therapy. This procedure does not provide serial monitoring; it is intended for one-time use only. If serial monitoring is required, please order test 511097
Specimen Requirements
Preferred:
Container/Tube: Urine
Minimum Volume: 20 mL
Collection Instructions: Collect a second void of the morning (no preservative). When monitoring therapy, baseline samples should be collected prior to initiation of therapy. Subsequent specimens should be collected at the same time of day as baseline specimens.
Storage Instructions: Refrigerate
Specimen Stability
Ambient: 14 days
Refrigerate: 14 days
Frozen: 14 days
Reject Due To
Quantity not sufficient for analysis; whole blood contamination; hemolysis; specimen containing preservative
Turn Around Time
3-4 days
Reference Range
Adults:
− Male: 0−62 nM BCE/mmol creatinine
− Female: 20 to 49 years 0−64 nM BCE/mmol creatinine; >49 years 0−89 nM BCE/mmol creatinine
Methodology
Ortho Vitros Enhanced Chemiluminescence System
CPT
82523 ; 82570