C Telopeptide (B CTx), Serum
General Information
- Lab Name
- C Telopeptide (B CTx), Serum
- Lab Code
- BCTX
- Epic Name
- C-Telopeptide (B-CTx), Serum
- Description
Useful For:
- Monitoring antiresorptive therapies (eg, bisphosphonates and hormone replacement therapy) in postmenopausal women treated for osteoporosis and individuals diagnosed with osteopenia
- An adjunct in the diagnosis of medical conditions associated with increased bone turnover
Patient Preparation:
- For 12 hours prior to specimen collection, patient should refrain from taking multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.
- Patient should be fasting.
- Synonyms
- B-Ctx, Beta CrossLaps, Beta-CTx, C-Telopeptide, C-terminal collagen crosslinks, Carboxy terminal collagen crosslinks, CTX
- Components
Interpretation
- Reference Range
-
Units: pg/mL
Female Male Age Range Age Range 18y-29y 148-967 18y-29y 238-1019 30y-39y 150-635 30y-39y 225-936 40y-49y 131-670 40y-49y 182-801 50y-59y 183-1060 50y-59y 161-737 60y-69y 171-970 60y-69y 132-752 70y- 152-858 70y- 118-776 Effective date: 03/04/2024
Ordering & Collection
- Specimen Type
- Blood
- Collection
-
Acceptable: 6 mL blood in RED TOP tube
Also acceptable: GOLD SST
Patient Preparation:
- For 12 hours prior to specimen collection, patient should refrain from taking multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.
- Patient should be fasting
- Handling Instructions
Outside Laboratories: Centrifuge sample and transfer serum to a separate plastic vial. Freeze serum at -20°C while awaiting transport. Ship on dry ice.
Stability: Frozen (preferred): 90 days; Refrigerated: 72 hours; Ambient: Unacceptable.
Reject Due To: Gross hemolysis, gross icterus
- Quantity
-
Requested: 1 mL serum
Minimum: 0.75 mL serum
Processing
- Receiving Instructions
Centrifuge sample promptly and transfer 1 mL serum into a separate plastic vial. Freeze at -70C for batch testing.
- Misc Sendout
Performance
- Lab Department
- Chemistry, University(CHU)
- Frequency
- Weekly
- Available STAT?
- No
- Performing Location(s)
-
UW-MT Chemistry, Special
206-520-4600Clinical Lab, Room NW220,
University of Washington Medical Center,
1959 NE Pacific street, Seattle, WA 98195
Billing & Coding
- CPT Codes
- 82523
- LOINC
- 41171-0
- Interfaced Order Code
- UOW4910
- Interfaced Result Code
- UOW4910