C-Telopeptide, Beta Cross Linked
Test Mnemonic
CTELO
CPT Codes
- 82523 - QTY (1)
LOINC ®
41171-0
Aliases
- Beta-CrossLaps (Beta-CTx), Serum
- CTX
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Centrifuge, aliquot and freeze ASAP. | Frozen, Critical | Morning fasting specimen is preferred. Separate specimens must be submitted when multiple tests are ordered. Allow tube to sit for 15-20 minutes at room temperature to form clot. Centrifuge and separate serum from cells ASAP or within 2 hours of collection. Transfer serum to standard aliquot tube and freeze. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Plasma | Lavender EDTA | Centrifuge, aliquot and freeze ASAP. | Frozen, Critical | Morning fasting specimen is preferred. Separate specimens must be submitted when multiple tests are ordered. Centrifuge and separate plasma from cells ASAP or within 2 hours of collection. Transfer plasma to standard aliquot tube and freeze. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Frozen | After separation from cells: 3 months at - 20 C |
| Refrigerated | After separation from cells: 8 hours |
| Ambient | After separation from cells: 6 hours |
Days Performed
Mon - Fri
Turnaround Time
1 - 3 days
Methodology
| Name | Description |
|---|---|
| Electro Chemiluminescence Immunoassay (ECLIA) |
Reference Range
| C Telopeptide, Beta Cross Linked | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Female | Years | 29.9 Years | Normal | 148-967 | pg/mL | Female | 30 Years | 39.9 Years | Normal | 150-635 | pg/mL | Female | 40 Years | 49.9 Years | Normal | 131-670 | pg/mL | Female | 50 Years | 59.9 Years | Normal | 183-1060 | pg/mL | Female | 60 Years | 69.9 Years | Normal | 171-970 | pg/mL | Female | 70 Years | Normal | 152-858 | pg/mL | Male | Years | 29.9 Years | Normal | 238-1019 | pg/mL | Male | 30 Years | 39.9 Years | Normal | 225-936 | pg/mL | Male | 40 Years | 49.9 Years | Normal | 182-801 | pg/mL | Male | 50 Years | 59.9 Years | Normal | 161-737 | pg/mL | Male | 60 Years | 69.9 Years | Normal | 132-752 | pg/mL | Male | 70 Years | Normal | 118-776 | pg/mL | Female: Premenopausal: 138 - 689 pg/mL | Female: Postmenopausal: 177 - 1015 pg/mL |
Special Info
CRITICAL FROZEN. Morning fasting specimen preferred.
Clinical Info
Preferred test to measure bone resorption and monitor response to antiresorptive therapy (e.g., bisphosphonates, hormone replacement therapy) in postmenopausal women and individuals with osteoporosis.