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HelpTest Code LAB2964 C-Telopeptide, Beta-Cross-Linked
Additional Codes
C-Telopep
Clinical System Name
C-Telopeptide, Beta-Cross-Linked
Sample Requirements
Specimen: Whole Blood
Container(s): Red, Gold SST, or Lavender/EDTA
Preferred Vol: 2.0 mL
Minimum Vol: 1.0 mL
Note: For patients receiving therapy with high biotin doses (e.g. greater than 5 mg/day), specimen should not be drawn until at least eight hours after the last biotin administration.
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Processing Instructions
Reject due to: Hemolyzed specimens.
Spin: Y
Aliquot: Y
Temp: -20 C
Storage location: 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 within TWO hours of collection. Place sample in CPA -20 freezer, Send Outs rack.
Off-site collection: Separate serum or plasma from cells within 2 hours of collection.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum or plasma | Room temp |
4 h |
| Refrigerated | 8 h | |
| Frozen |
3 m |
Performing Laboratory
ARUP Laboratories
500 Chipeta Way
Salt Lake City, UT 84108-1221
Phone Number: (800) 522-2787
Department
Department: Send Outs
Phone Number: (206) 987-2563
Synonyms
C telopeptide
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
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | T, Th, and Sa | 1 - 4 d |
Methodology
Method: Quantitative Electrochemiluminescent Immunoassay
Analytical Volume: 0.5 mL Serum or Plasma
Limitations:
Reference Range
| Age | Female (pg/mL) | Male (pg/mL) |
| 6 months-6 years | 500-1800 | 500-1700 |
| 7-8 years | 566-1690 | 522-1682 |
| 10-12 years | 503-2077 | 553-2071 |
| 13-15 years | 160-1590 | 485-2468 |
| 16-17 years | 167-933 | 276-1546 |
| 18-29 years | 64-640 | 87-1200 |
| 30-39 years | 60-650 | 70-780 |
| 40-49 years | 40-465 | 60-700 |
| 50-69 years | 87-345 | |
| 70 years or greater | 80-1050 | |
| Postmenopausal | 104-1008 |
CPT Codes
82523
Send Out Instructions
| Reference Test Name: | C-Telopeptide, Beta-Cross-Linked, Serum |
| Reference Lab Test Code: | |
| Instructions: |
Send out Monday through Friday with the ARUP courier. |