CTx
| Source |
Blood |
| Mnemonic |
CTX |
| Specimen Requirements |
1 x 3 mL light green (mint) top PST tube. Gold top SST tube, lavender top EDTA tube and green top sodium heparin tube also acceptable.
0.5 mL plasma or serum
Pediatric: 1.0 mL whole blood
Patients are recommended to fast for 10 hours, however a fasting interval of 9-14 hours is acceptable. |
| Specimen Handling |
PSC and RRL:
Centrifuge, pour off and mark aliquot tube with collection tube type (e.g. "PST"), then transport plasma or serum to DSC.
Extra-regional:
Centrifuge, pour off and mark aliquot tube with collection tube type (e.g. "PST"), then freeze plasma or serum before transporting to DSC.
DSC:
Freeze specimens upon receipt in lab; ensure frozen specimens do not thaw. |
| Additional Information |
This assay detects: C-Terminal Telopeptides of Type I collagen, cross linked and isomerized.
ß-Cross Laps/serum assay, Roche Diagnostics Ltd. |
| Testing Location |
Immunochemistry |
|
| Testing Frequency |
Monday, Wednesday & Friday |
| Alternate Name(s) |
C-Telopeptide (serum), C-Terminal Telopeptides, Beta Cross Laps |
| Reference Interval |
Male: 0 - 400 ng/L
Female: 0 - 400 ng/L |
|
