Collagen Type I C-Telopeptide (CTx)
Order Code:
CTELO
Test Summary
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.
Aliases
- C-Telopeptide, Serum, CTX, Beta-Crosslaps
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL fasting serum
Minimum Volume
0.5 mL
Instructions
Allow blood to clot (30-60 minutes) at room temperature. Centrifuge and separate the serum from the cells and transfer serum to a clean transport tube. Freeze as soon as possible.
Patient Preparation
Minimum of 12 hours fasting is required. Fasting morning collection 8-10 am. (Diurnal variations cause elevated levels at night.)
Dietary supplements containing biotin may interfere in assays and may skew analyte 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.
Dietary supplements containing biotin may interfere in assays and may skew analyte 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.
Storage
Transport tube
Transport Temperature
Frozen
Specimen Stability
- Room temperature: 16 hours
- Refrigerated: 72 hours
- Frozen: 90 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Moderate to gross hemolysis • Grossly lipemic • Grossly icteric
Order Code
CTELO
EPIC (Premier) Code
LAB3281
Includes
N/A
CPT Code
- 82523
Billing Code
- 670240
CPT Statement
Methodology
Immunoassay (IA)
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Department
Reference Testing
Reference Range
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
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 1 - 3 days
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL fasting serum
Minimum Volume
0.5 mL
Instructions
Allow blood to clot (30-60 minutes) at room temperature. Centrifuge and separate the serum from the cells and transfer serum to a clean transport tube. Freeze as soon as possible.
Patient Preparation
Minimum of 12 hours fasting is required. Fasting morning collection 8-10 am. (Diurnal variations cause elevated levels at night.)
Dietary supplements containing biotin may interfere in assays and may skew analyte 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.
Dietary supplements containing biotin may interfere in assays and may skew analyte 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.
Storage
Transport tube
Transport Temperature
Frozen
Specimen Stability
- Room temperature: 16 hours
- Refrigerated: 72 hours
- Frozen: 90 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Moderate to gross hemolysis • Grossly lipemic • Grossly icteric
Result Information
Methodology
Immunoassay (IA)
Testing Laboratory
N/A
Reference Range
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
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 1 - 3 days