Test Overview
Test Methodology

ECi Competitive Assay

Test Usage

Identifying individuals with elevated bone resorption who have osteoporosis in whom response to treatment is being monitored; Predicting response (as assessed by bone mass measurements) to Food and Drug Administration (FDA)-approved antiresorptive therapy in postmenopausal women; Assessing effectiveness of osteoporosis treatment including FDA-approved antiresorptive therapies in postmenopausal women, individuals with osteoporosis, Paget's disease of bone, and antiestrogen or selective estrogen therapies.

Reference Range *

Age and sex specific reference ranges provided with report.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday, Thursday
Analytic Time

2 - 6 days

Soft Order Code
NTXU
MiChart Code
N-Telopeptides, 24 HR Urine (Sendout)
Synonyms
  • OHPT
  • N-Telopeptides, Urine
  • Pyrrolinks-D, Urine
  • Crosslinked N-telopeptide of Type 1 Collagen, Urine
  • Type I Collagen (NTX), Urine
  • Collagen Crosslinks, Urine
  • HYDROXYPROLINE, TOTAL, 24 HOUR
  • UNTX
  • NTX-Telopeptide, Urine
Laboratory
Sendout
Reference Laboratory
Mayo NTXPR (61656)
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect a second-morning void urine specimen, aliquot urine into a plastic urine tube, and freeze (preferred). Specimens stored refrigerated up to 14 days are acceptable.

Normal Volume
4 mL urine
Minimum Volume
0.5 mL urine
Additional Information

Test sent to Mayo Medical Laboratories.

Billing
CPT Code
82523
Fee Code
32154
LOINC
14115-0
Resources