Laboratory Test Information Guide

Details for C-Telopeptide, Plasma

Test Name: C-Telopeptide, Plasma
Alternate Name(s): Beta Crosslaps
β-CTX
C-Telo
Laboratory: Core
Specimen Type: Adult:
4 mL Lavender top (EDTA) Vacutainer tube

Pediatric:
0-2 years: 0.5 mL Lavender top (EDTA) Microtainer
2-10 years: 2 mL Lavender top (EDTA) Vacutainer tube

Red, Gold, or Light Green (Li-heparin) top tubes are also acceptable as long as the serum or plasma is analyzed or frozen within a few hours of collection; EDTA plasma is the preferred choice due to the greater stability of C-telopeptide in EDTA plasma

It is recommended for morning samples from fasting patients to be collected for this test
Collection Information: Minimum volume of plasma or serum required is 700 µL for adult samples or 200 µL for pediatric samples.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: Monday - Friday
0800-1600
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
5 days
Stat
N/A
 
Reference Range: Male:
30 - 50 years: ≤ 584 ng/L
50 - 70 years: ≤ 704 ng/L
> 70 years: ≤ 854 ng/L


Female:
Pre-menopausal: ≤ 573 ng/L
Post-Menopausal: 104 - 1008 ng/L
Effective Date: 2015-04-15
Revised Date: 2018-03-06
Critical Value:  
Interpretive Comments: Increased levels of C-telopeptide occur in osteoporosis, Paget’s disease, primary hyperparathyroidism, renal insufficiency, and bone metastases.
Special Processing:  
Comments: Biotin may interfere with this test. Samples should not be taken from patients receiving high biotin doses (i.e. > 5 mg/day) until at least 8 hours after the last biotin administration.
Method of Analysis: Roche Electrochemiluminescence
Critical Information Required:  
Storage & Shipment: Store and ship plasma or serum frozen.
System Codes: 
Cerner
CTELO
 
Referred To:  

Questions? Comments? Contact Laura Gopaul