Homocysteine HCY
Method(s) | Chemiluminescent Immunoassay |
---|---|
Specimen Required | |
Collect | One 5 mL gold (SST) top tube. |
Transport | 1 mL serum at 2-8ºC. Heparinized or EDTA plasma may also be used. |
Remarks | Centrifuge within 1 hour of collection. |
Stability | Refrigerated: 14 days; Frozen: 6 months |
Schedule | Twice weekly M-F |
Billing Code | 1010084 |
CPTCode | 83090 |
Notes | Patient should be fasting for 12 hours prior to collection. Specimen (plasma or serum) must be centrifuged within one hour of collection. Longer storage of whole blood samples at room temperature has been found to increase homocysteine concentration in the plasma. |
Preferred Specimen Collection Device(s) | |
Reference Interval | |
0-60 years: 5.0-18.0 umol/L Over 60 years: 5.0-20.0 umol/L |