C-Telopeptide, Beta Cross Linked




Test Mnemonic

CTELO

CPT Codes

  • 82523 - QTY (1)

LOINC ®

41171-0

Aliases

  • Beta-CrossLaps (Beta-CTx), Serum
  • CTX

Performing Laboratory

Cleveland Clinic Laboratories


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLSerumSST (Gold)Centrifuge, aliquot and freeze ASAP.Frozen, CriticalMorning fasting specimen is preferred. Separate specimens must be submitted when multiple tests are ordered. Allow tube to sit for 15-20 minutes at room temperature to form clot. Centrifuge and separate serum from cells ASAP or within 2 hours of collection. Transfer serum to standard aliquot tube and freeze.

Alternate Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLPlasmaLavender EDTACentrifuge, aliquot and freeze ASAP.Frozen, CriticalMorning fasting specimen is preferred. Separate specimens must be submitted when multiple tests are ordered. Centrifuge and separate plasma from cells ASAP or within 2 hours of collection. Transfer plasma to standard aliquot tube and freeze.

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.5 mL     

Stability

Environmental Condition Description
FrozenAfter separation from cells: 3 months at - 20 C
RefrigeratedAfter separation from cells: 8 hours
AmbientAfter separation from cells: 6 hours

Days Performed

Mon - Fri

Turnaround Time

1 - 3 days

Methodology

Name Description
Electro Chemiluminescence Immunoassay (ECLIA) 

Reference Range

C Telopeptide, Beta Cross Linked
Sex Age From Age To Type Range Range Unit
Female  Years29.9 YearsNormal148-967pg/mL
Female30 Years39.9 YearsNormal150-635pg/mL
Female40 Years49.9 YearsNormal131-670pg/mL
Female50 Years59.9 YearsNormal183-1060pg/mL
Female60 Years69.9 YearsNormal171-970pg/mL
Female70 Years   Normal152-858pg/mL
Male  Years29.9 YearsNormal238-1019pg/mL
Male30 Years39.9 YearsNormal225-936pg/mL
Male40 Years49.9 YearsNormal182-801pg/mL
Male50 Years59.9 YearsNormal161-737pg/mL
Male60 Years69.9 YearsNormal132-752pg/mL
Male70 Years   Normal118-776pg/mL
       Female: Premenopausal: 138 - 689 pg/mL 
       Female: Postmenopausal: 177 - 1015 pg/mL 

Special Info

CRITICAL FROZEN. Morning fasting specimen preferred.

Clinical Info

Preferred test to measure bone resorption and monitor response to antiresorptive therapy (e.g., bisphosphonates, hormone replacement therapy) in postmenopausal women and individuals with osteoporosis.