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- Ordering Info
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Collagen Cross-Linked N-Telopeptide (NTx), Urine
2 mL unpreserved urine from second morning void
Unpreserved random urine, unpreserved catheterized, or unpreserved first morning void clean catch
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.
Urine container, leak-proof
Refrigerated (cold packs)
Room temperature: 72 hours
Refrigerated: 5 days
Frozen: 30 days
Acidified specimen • Preserved specimen
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153
Set up: Mon-Sat evenings; Report available: Next day
Collagen Cross-Linked N-Telopeptide (NTx), Random Urine
|18-29 Years||12-99 nmol BCE/mmol creat|
|30-59 Years||9-60 nmol BCE/mmol creat|
|Premenopausal||4-64 nmol BCE/mmol creat|
Creatinine, Random Urine
|≤6 Months||2-28 mg/dL|
|7-11 Months||2-31 mg/dL|
|1-2 Years||2-110 mg/dL|
|3-8 Years||2-130 mg/dL|
|9-12 Years||2-160 mg/dL|
|>12 Years Male||20-320 mg/dL|
|>12 Years Female||20-275 mg/dL|
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.
Collagen Cross-Linked N-Telopeptide, N-Telopeptide or NTx
The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.NOTE: The codes listed in the table below are not orderable Test Codes.
|Result Name||LOINC Code||Component Name|
|14440||Creatinine, Random Urine||2161-8||Creatinine|
|14466A||N-Telopeptide (NTx)||14115-0||Collagen crosslinked N-telopeptide/Creatinine|
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
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.
LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.
* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.