COLLAGEN CROSS-LINKED N-TELOPEPTIDE (NTx), 24-HOUR URINE

Components
Includes N-Telopeptide/Creatinine Ratio

Specimen Required
Discard first morning urine void. Collect urine voids for the next 24 hour period. The last sample collection should be the first morning specimen voided the following morning at the same time as the previous mornings first voiding. Mix well and send 5 mL urine (1 mL minimum) frozen in an IATA-approved screw-capped plastic urine container. Record total volume on test requisition and specimen label.

Methodology
Chemiluminescence

Stability
Room Temperature: 72 hours; Refrigerated: 5 days; Frozen: 30 days

Reference Range
18-29 years:   5-88 nM BCE/mM creat  
30-39 years:   7-51 nM BCE/mM creat  
40-49 years:   5-47 nM BCE/mM creat  
50-60 years:   6-43 nM BCE/mM creat  
Creatinine: By report

Performed
Tuesday, Thursday, Saturday

Turnaround Time5-7 days
Test CodeNTXUQ
CPT-4 Code (s)
82523, 82570
LOINC Codes
Total Volume   3167-4  
N-Telopeptide (NTx), 24h urine   21216-7  
Creatinine, 24-Hour Urine   2162-6  

Warde
Medical
Laboratory