Posted Date
Effective Date
Update Type Test Down or Delayed
CPT Code 82523
Order Code FNTX
Referral Laboratory Mayo Medical Laboratories

N-Telopeptide, Cross-Linked, Serum

Order Code: FNTX

Reference Laboratory: Mayo SNTX


Mayo Clinic Laboratories (MCL) N-terminal Telopeptide, Serum (SNTX test code) continues to be down (temporarily unavailable) without an equivalent alternative test via MCL due to continued reagent unavailability. Beta-CrossLaps, Serum (BCTx) (order code BCTX) could be considered in lieu of SNTX during this test down. B- CTx is an alternative marker of bone resorption and has been recommended by the International Osteoporosis Foundation as the reference bone resorption marker to be used in observational and intervention studies to