Test directory: Collagen Type I C-Telopeptide

Ordering Code 5553
Test Name Collagen Type I C-Telopeptide
Alias CTx
Preferred Specimen Serum
Preferred Container SST (Gold)
Other Specimen/Container Serum in Plain (Red)
Optimum Volume 1 mL
Collection Instructions A minimum of 12 hours fasting is required. Fasting morning collection 8-10 am. (Dinurnal variations cause elevated levels at night.)
Handling Instructions Separate serum promptly
Freeze as soon as possible if specimen will not REACH
Sendouts within 3 days.
Transport Requirements Oahu: Frozen
Airline: Frozen
Specimen Stability Ambient: 16 Hours
Refrigerated: 3 Days
Frozen: 3 Months
Rejection Criteria Gel barrier tube, Moderate to Gross Hemolysis specimens,
Gross lipemia, Gross icteric specimens
Avail. Stat NO
Analytic Time Up to 7 Days
Methodology Immunoassay
Reference Lab  Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of May 21, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Collagen Type I C-Telopeptide ALL See report.