Collagen Cross-Linked, 24-Hour Urine

Overview

  • EPIC Code:
  • LAB2555
  • Soft Test Code:
  • NTP24
  • Send Out Test Code:
  • 36421
Alternate Names
  • Collagen Cross Linked
  • NTX 24 hr urine
  • NTX 24hr Urine Collagen X
  • Urine N-Telopeptide
Included Tests

Collagen X-Link; Creatinine, Urine


Clinical Significance

Test is most specific for bone resorption (bone loss).


Specimen Collection & Preparation

Specimen Requirements

2.0 mL aliquot from a well mixed 24 hour Urine Collection in a Plastic Container

Alternate Specimen

 

TransportAndStorage

72 hours Ambient
5 days Refrigerated (transport)
30 days Frozen

Collection Instructions

1. When starting the 24-hour period, urinate and discard (throw-away) this specimen. NOTE THE TIME
2. From that time on, collect all urine by urinating into a clean container and transfer into the provided container. 
DO NOT URINATE DIRECTLY INTO CONTAINER.
3. Try to pass the last urine just prior to the end of the 24 hour period. Add this urine into the container. 
4. Urine Specimen should be kept refrigerated during and after collection. 

For patient collection instruction sheet see Addendum D
For Spanish patient collection instruction sheet see Addendum D
For Burmese patient collection instruction sheet see Addendum D
For Arabic patient collection instruction sheet see Addendum D

Clinical Interpretation

Reference Range:

Refer to Interpretive Results


Methodology:
  • Chemiluminescence (CL)

Clinical Significance

Test is most specific for bone resorption (bone loss).


Production Schedule

Sites Performed
  • Quest - Chantilly
Days Performed
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Departments
  • Sendouts - Clinical
Turn Around Time

3 to 7 days


Coding & Compliance

CPT Coding

82523, 82570


Medical Necessity May Apply