Collagen Type I C-Telopeptide (CTx) Blood Test

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Feature	Labcorp	Quest Diagnostics
Price	Coming soon	$31.49
Results in	—	~5 business days
Sample type	—	Blood Serum
Require fasting	—	Yes

About the test

CTx is useful to assess bone resorption in patients with metabolic bone disease. The test is also useful in monitoring therapy to slow or halt osteoporotic bone loss.

Included biomarkers & Reference ranges

Biomarker	Reference range
C-Telopeptide (CTx) Measures C-telopeptide (CTx), a fragment released when bone is broken down, used to help look at bone turnover and monitor osteoporosis treatment.	—

Reference ranges vary by lab, age, and sex (M/F). Your report shows your exact range. Click any biomarker to see its optimal range and what your results mean.

Preparation

Dietary supplements containing biotin may interfere in assays and may skew results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation.
Overnight fasting is required.
Fasting before a blood draw means you don't eat or drink anything except water.
Your doctor should provide any special instructions related to fasting for your test. Always follow your doctor's instructions.
Collect specimen between 8 a.m. and 10 a.m.

How it works

1. Order online No referral or insurance
2. Get a requisition By email in 24–72 hours
3. Visit a draw center Bring a matching photo ID
4. Get results Securely by email

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Consultations

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Schedule a consultation with a Hormunity specialist. We’ll walk through every marker, interpret what it means for you, and map out the next steps for your care.

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