Collagen Type I C-Telopeptide (CTx)
Quest Diagnostics
Sample type: Serum
Requires fasting: Yes
Phlebotomy required
Details
Collagen Type I C-Telopeptide (CTx) - 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.
- C-Telopeptide (CTx)
Estimated days for results: Results should be available in 2 - 5 business days after the sample is collected
Details
Collagen Type I C-Telopeptide (CTx) - 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.
What type of sample is required for this test?
1 mL serum
Test Resources
For more information, please consult your healthcare provider.
3–5 business days
Adult Male
18–29 Years 87–1200 pg/mL
30–39 Years 70–780 pg/mL
40–49 Years 60–700 pg/mL
50–68 Years 87–345 pg/mL
Adult Female
18–29 Years 60–640 pg/mL
30–39 Years 60–650 pg/mL
40–49 Years 50–465 pg/mL
>49 Years Not established
Pediatric Male
5–9 Years 574–1849 pg/mL
10–13 Years 519–2415 pg/mL
14–17 Years 435–2924 pg/mL
Pediatric Female
5–9 Years 574–1849 pg/mL
10–13 Years 519–2415 pg/mL
14–17 Years 242–1291 pg/mL
18–29 Years 87–1200 pg/mL
30–39 Years 70–780 pg/mL
40–49 Years 60–700 pg/mL
50–68 Years 87–345 pg/mL
Adult Female
18–29 Years 60–640 pg/mL
30–39 Years 60–650 pg/mL
40–49 Years 50–465 pg/mL
>49 Years Not established
Pediatric Male
5–9 Years 574–1849 pg/mL
10–13 Years 519–2415 pg/mL
14–17 Years 435–2924 pg/mL
Pediatric Female
5–9 Years 574–1849 pg/mL
10–13 Years 519–2415 pg/mL
14–17 Years 242–1291 pg/mL
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.
Blood Draw Options with Fullscript
Fullscript offers several convenient phlebotomy options to complete your lab testing:
Quest Diagnostics Patient Service Centers (PSC)
- Location: Visit a nearby Quest Diagnostics Patient Service Center.
- Cost: $10 sample collection fee (paid during lab order checkout).
- Scheduling: Schedule your appointment here. Appointments are recommended to reduce wait times. Walk-ins are accepted, but may experience delays. Aim to arrive 10 minutes before your appointment.
- Collection Instructions:
- Bring a valid ID.
- Bring your digital or printed requisition form, available in the Labs tab of your Fullscript account.
- Check-in: Scan the QR code from your confirmation email or follow kiosk instructions.
- More Info: Quest Diagnostics blood draw guide
Getlabs Mobile Phlebotomy
- Location: Sample collection at your home or office.
- Cost: $85 sample collection fee (paid during lab order checkout).
- Availability: Available in most locations – enter your ZIP code during checkout to confirm.
- Scheduling: Schedule your appointment here through your Fullscript account.
- Collection Instructions:
- Have your digital or printed requisition form and valid ID ready.
- Your phlebotomist will contact you by phone to coordinate arrival.
- More Info: Getlabs blood draw guide
Specimen
- Preferred Specimen(s): 1 mL serum
- Alternative: NA
- Minimum Volume: 0.5 mL
- Collection Instructions: NA
Storage and shipping instructions
- Transport Container: Transport tube
- Transport Temperature: Frozen
- Specimen Stability:
- Room temperature: 16 hours
- Refrigerated: 72 hours
- Frozen: 90 days
- Reject Criteria:
- Moderate to gross hemolysis • Grossly lipemic • Gross icteric
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island
