Test Catalog

Test ID: SNTX    
N-terminal Telopeptide (NTx), Serum

Useful For Suggests clinical disorders or settings where the test may be helpful

Monitoring effectiveness of antiresorptive therapy in patients treated for osteoporosis or other metabolic bone disorders


As an adjunct in the diagnosis of medical conditions associated with increased bone turnover


Elevated levels of N-terminal telopeptide (NTx) indicate increased bone resorption.


Measurement of serum NTx is helpful for monitoring effectiveness of antiresorptive therapies in patients treated for osteoporosis or other metabolic bone disorders.


A 30% or greater reduction in NTx serum concentrations 3 to 6 months after initiation of therapy indicates a probably adequate therapeutic response.

Method Name A short description of the method used to perform the test

Enzyme-Linked Immunosorbent Assay (ELISA)

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

NTX-Telopeptide, S

Aliases Lists additional common names for a test, as an aid in searching

Collagen Crosslinks
Crosslinked N-telopeptide of Type I Collagen (NTX), Serum
N-Telopeptide, Serum