Collagen Cross-Linked N-Telopeptide (NTx), 24-Hour Urine QNT24U

Method(s) Chemiluminescence (CL)
Synonym N-Telopeptide or NTx
Specimen Required
Collect

24 hour urine.

Transport

2 mL of 24-hour urine collection refrigerated (Min: 1 mL).

* Collection Instructions *

  • Do not include first morning specimen; collect all subsequent voidings.
  • The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning's first voiding.
  • Specify 24-hour total volume on container and test requisition.
Stability

Ambient: 72 hours

Refrigerated: 5 days

Frozen: 30 days

Unacceptable Conditions
  • Acidified specimen
  • Preserved specimen
Schedule Mon-Sat
CPTCode 82523, 82570
Notes Performing Laboratory-Quest Diagnostics-Chantilly VA
Preferred Specimen Collection Device(s)
Reference Interval
 
Collagen Cross-Linked N-Telopeptide (NTx), 24-Hour Urine
Male 
18-29 Years5-88 nM BCE/mM creat
30-39 Years7-51 nM BCE/mM creat
40-49 Years5-47 nM BCE/mM creat
50-60 Years6-43 nM BCE/mM creat
Female 
Premenopausal5-79 nM BCE/mM creat

Results are primarily used for monitoring the response to therapy. A value within the premenopausal reference range does not rule out opsteoporosis nor the need for therapy.

 
Creatinine, 24-Hour Urine
Less than 3 YearsNot established
3-8 Years0.10-0.80 g/24 h
9-12 Years0.20-1.40 g/24 h
13-17 Years0.40-1.90 g/24 h
Greater than 17 Years0.50-2.15 g/24 h
No Appointment Necessary
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12 Patient Service Centers in Central New York.

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