N-Telopeptide, Urine
Test Code: NTXU
CPT Code: 82523
Test Name
N-Telopeptide, Urine
Epic Test Code
LAB816
Alias
N-Telopeptide, Cross-Linked, Urine; Collagen Crosslinks; Cross-Linked N-Telopeptide; NTX Urine; NTX Creatinine; Crosslinked N-telopeptide of Type I Collagen
Specimen Type
One 1.0 mL (min: 0.5 mL) urine frozen. Record total volume and collection time interval on transport tube. If second-morning urine is submitted, indicate "second-morning" on transport tube.
Specimen Container
One urine in a sterile container
Specimen Handling
Collect 24 hour or second-morning urine. Sample must be refrigerated during collection.
24 Hour Urine Collection Instructions:
1. Obtain Container.
2. Patient to void at start of 24 hour period - discard urine.
3. Collect all urine for 24 hours.
4. Refrigerate container during collection.
5. At end of 24 hour period, patient to void - this urine must be included in the collection.
6. Deliver specimen to laboratory at end of collection period.
24 Hour Urine Collection Instructions:
1. Obtain Container.
2. Patient to void at start of 24 hour period - discard urine.
3. Collect all urine for 24 hours.
4. Refrigerate container during collection.
5. At end of 24 hour period, patient to void - this urine must be included in the collection.
6. Deliver specimen to laboratory at end of collection period.
Unacceptable Conditions
Specimens contaminated with blood or extensive hemolysis
Methodology
Quantitative Chemiluminescent Immunoassay (CLIA)
Schedule
Tuesday - Saturday
Reporting Time
Final: 6 days
Additional Information
Patient Preparation: For monitoring therapy, a baseline specimen should be collected prior to initiation of therapy. Subsequent specimens for comparison should be collected at the same time of day as the baseline specimen.
Stability
Ambient: 24 Hours / Refrigerated: 1 Week / Frozen: 4 Weeks
Referral Lab Information
ARUP:70062
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