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Collagen type 1B-telopeptide (blood)
Lab code: BCTX
Test Synonyms:
Collagen type 1B-telopeptide
  NOTE: This test is performed at an external reference lab.
Chemistry (Sendouts)
Inpatient Req:
Core Lab (#84927)  
Outpatient Req:
Clinical Labs (#83608)  
Gold 5 ml
Fasting sample required. Specimen should be drawn prior to 10 AM.
Result Time:
3-5 days   Cost: $$
Reference Interval:
Important Information:
This test measures beta-crosslaps (beta-CTx), the beta form of aspartic acid, which is released during breakdown of mature of type I collagen. Increased levels of serum beta-CTx might indicate increased bone reabsorption. This test may be useful in monitoring the effectiveness of certain osteoporosis medications or in diagnosing certain disorders associated with increased bone reabsorption. Assaying urine N-telopeptides may also help assess bone turnover in some patients.
Additional Resources:
Click here for information regarding this test from the reference laboratory website