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Collagen Type I C-Telopeptide (CTx)
Access Medical Labs · Quest Diagnostics2 test optionsFrom $54.47
Collagen Type I C-Telopeptide (CTx)
Access Medical Labs · Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
DetailsCollagen Type I C-Telopeptide (CTx) is a blood or urine test that measures the breakdown products of type I collagen, the main protein in bones. It serves as a marker of bone resorption, helping to assess bone turnover rates. This test is commonly used in the evaluation and monitoring of osteoporosis, other metabolic bone diseases, and the effectiveness of treatments aimed at reducing bone loss.
What type of sample is required for this test?Serum
Test ResourcesFor more information, please consult your healthcare provider.
Additional test information
Collagen Type I C-Telopeptide (CTx) is a blood or urine test that measures the breakdown products of type I collagen, the main protein in bones. It serves as a marker of bone resorption, helping to assess bone turnover rates. This test is commonly used in the evaluation and monitoring of osteoporosis, other metabolic bone diseases, and the effectiveness of treatments aimed at reducing bone loss.
Collection and processing
- Sample type: Serum
- Fasting: Yes
- Estimated laboratory processing: Results should arrive 5 – 8 business days after the lab receives samples.
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Serum. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: Yes. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should arrive 5 – 8 business days after the lab receives samples.. Timing can change after collection or if a laboratory requires additional review.
About this test
DetailsCollagen Type I C-Telopeptide (CTx) is a blood or urine test that measures the breakdown products of type I collagen, the main protein in bones. It serves as a marker of bone resorption, helping to assess bone turnover rates. This test is commonly used in the evaluation and monitoring of osteoporosis, other metabolic bone diseases, and the effectiveness of treatments aimed at reducing bone loss.
What type of sample is required for this test?Serum
Test ResourcesFor more information, please consult your healthcare provider.
Additional details
Collagen Type I C-Telopeptide (CTx) is a blood or urine test that measures the breakdown products of type I collagen, the main protein in bones. It serves as a marker of bone resorption, helping to assess bone turnover rates. This test is commonly used in the evaluation and monitoring of osteoporosis, other metabolic bone diseases, and the effectiveness of treatments aimed at reducing bone loss.
Highlighted health areas
- Bone/Joint
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- C-Telopeptide (CTx)