C-Telopeptide, Beta-Cross-Linked, Serum
0070416
Ordering Recommendation
Mnemonic
CTX
Methodology
Quantitative Electrochemiluminescent Immunoassay
Performed
Tue, Thu, Sat
Reported
1-4 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
- Patient Preparation
- For patients receiving therapy with high biotin doses (e.g. greater than 5 mg/day), specimen should not be drawn until at least 8 hours after the last biotin administration.
- Collect
- Serum separator tube, pink (K2EDTA), or green (sodium heparin).
- Specimen Preparation
- Allow serum separator tube to sit for 15-20 minutes at room temperature for proper clot formation. Centrifuge and separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)
- Storage/Transport Temperature
- Frozen.
- Unacceptable Conditions
- Hemolyzed specimens.
- Remarks
- Stability
- After separation from cells: Ambient: 4 hours; Refrigerated: 8 hours; Frozen: 3 months
Reference Interval
Effective November 14, 2011
| Age | Female | Male |
| 6 months-6 years | 500-1800 pg/mL | 500-1700 pg/mL |
| 7-9 years | 566-1690 pg/mL | 522-1682 pg/mL |
| 10-12 years | 503-2077 pg/mL | 553-2071 pg/mL |
| 13-15 years | 160-1590 pg/mL | 485-2468 pg/mL |
| 16-17 years | 167-933 pg/mL | 276-1546 pg/mL |
| 18-29 years | 64-640 pg/mL | 87-1200 pg/mL |
| 30-39 years | 60-650 pg/mL | 70-780 pg/mL |
| 40-49 years | 40-465 pg/mL | 60-700 pg/mL |
| 50-69 years | 40-840 pg/mL | |
| 70 years or greater | 52-847 pg/mL | |
| Postmenopausal | 104-1008 pg/mL |
Interpretive Data
Note
CPT Code(s)
82523
Components
| Component Test Code* | Component Chart Name |
|---|---|
| 0070415 | C-Telopeptide, Beta-Cross-Linked, Serum |
Aliases
- Beta-CTx
- ?-Cross Laps
- B-CTx
- Beta-Cross Laps
- bone resorption marker
- C-Telopeptide
- C-terminal collagen crosslinks
- Carboxy terminal collagen crosslinks
- Collagen C Telopeptide
- Collagen Type I-C
- Collagen Type I-C Telopeptide
- CTx