N-Telopeptide, Serum : 1015354

Test Code
NTELOQ or 1015354

Alias/See Also
N-Telopeptide, NTx

CPT Codes
82523

Instructions
Serum separator tube or plain red.

Transport Container
Centrifuge the serum separator tube or plain red top and aliquot 1 mL serum (Min: 0.5 mL) into a standard transport tube. Freeze immediately.

Transport Temperature
Frozen.

Specimen Stability
Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 60 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens received in frozen Serum Separator tubes, Plasma.

Methodology
Enzyme Immunoassay (EIA)

Setup Schedule
Wednesday

Report Available
2-8 days (From receipt at performing laboratory)

Reference Range
Adult Male greater than or equal to 19 years: 5.4-24.2 nM BCE
Adult Female greater than or equal to 19 years: 6.2-19.0 nM/BCE

Clinical Significance
Serum N-Telopeptide (NTx) levels may be used in predicting skeletal response (bone mineral density) to antiresorptive therapy and in monitoring bone resorption changes following initiation of antiresorptive therapy. Prior to initiating antiresorptive therapy, a serum NTx level is used to determine the probability for a decrease in bone mineral density (BMD) after one year in postmenopausal women treated with hormonal antiresorptive therapy relative to those treated with calcium supplementation.

Performing Laboratory
Quest Diagnostics



The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.