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Test Code NTXPR NTX-Telopeptide, Urine

Secondary ID

61656

Profile Information

Test ID Reporting Name Available Separately Always Performed
NTXCT Creatinine, U No Yes
NTXUR NTX-Telopeptide, U No Yes

Method Name

NTXUR: Chemiluminescence Immunoassay

NTXCT: Enzymatic Colorimetric Assay

Specimen Type

Urine


Specimen Required


Patient Preparation: For 24 hours before specimen collection do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.

Container/Tube: Plastic, 13-mL urine tube

Specimen Volume: 4 mL

Collection Instructions:

1. Collect second morning void.

2. No preservative.


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Frozen (preferred) 28 days
  Refrigerated  14 days
  Ambient  72 hours

Reject Due To

Gross hemolysis Reject
Specimen with pH <5; Specimen containing preservatives Reject

Reference Values

All units are reported in nmol Bone Collagen Equivalents/mmol creatinine.

Pediatric

Males:

Tanner Stage I: 55-508 nmol BCE/mmol creatinine

Tanner Stage II: 21-423 nmol BCE/mmol creatinine

Tanner Stage III: 27-462 nmol BCE/mmol creatinine

Tanner Stage IV: <609 nmol BCE/mmol creatinine

Tanner Stage V: <240 nmol BCE/mmol creatinine

 

Females:

Tanner Stage I: 6-662 nmol BCE/mmol creatinine

Tanner Stage II: 193-514 nmol BCE/mmol creatinine

Tanner Stage III: 13-632 nmol BCE/mmol creatinine

Tanner Stage IV: <389 nmol BCE/mmol creatinine

Tanner Stage V: <132 nmol BCE/mmol creatinine

 

Adult (≥18 years of age)

Males:

21-83 nmol BCE/mmol creatinine

 

Females:

Premenopausal: 17-94 nmol BCE/mmol creatinine

Postmenopausal: 26-124 nmol BCE/mmol creatinine

Day(s) and Time(s) Performed

Monday, Thursday; Varies

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

82570

82523