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36167: Collagen Cross-linked N-telopeptide (ntx), Urine Print View
N-Telopeptides/Creatinine Ratio CALC  view ref range  nM BCE/mM cr 
Creatinine, Random Urine C  view ref range  mg/dL 

PRIMARY
1 Urine 2 (1) mL   Room Temperature - 72 Hour(s)/Refrigerated - 5 Day(s)/Frozen - 30 Day(s)  
ALTERNATE
  Urine Catherized   Refrigerated - 5 Day(s)/Room Temperature - 72 Hour(s)/Frozen - 30 Day(s)  
  Urine Clean Catch   Refrigerated - 5 Day(s)/Room Temperature - 72 Hour(s)/Frozen - 30 Day(s)  

NTx is useful to assess bone resorption in patients with metabolic bone disease. The test is also useful in monitoring therapy to slow or halt osteoporotic bone loss. A decline of 30% or more of NTx over a six-month period suggests effective therapy.

Do not use preservatives. Acidified specimen is not acceptable.
Second morning void urine: Discard the first morning void.
Collect the second morning void. Mix well.
Setup Schedule
Tuesday, Thursday, Saturday

Reported (Analytical Time)
Same day

CPT Codes
82523,82570

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
Preferred Specimen: 2 mL (1 mL) unpreserved urine collected from second morning void.
Acceptable Specimen: 2 mL (1 mL) Unpreserved random urine, or unpreserved catheterized urine, or unpreserved first void clean catch urine.
Transport Temperature: Refrigerated
Reject Criteria: Acidified specimen; Preserved specimen






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