Homocysteine, Total

Test Code

LAB93

CPT Codes
83090

Preferred Specimen

Serum separator or Serum tube or Green

Minimum Volume

1 mL serum at 2-8°C. (Min: 0.5 mL)

Other Acceptable Specimens

Gold SST

Instructions

Spin SST and send to lab

Transport Temperature

Refrigerate

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Grossly hemolyzed or Heat inactivated specimens. Obvious microbial contamination. Cadaver specimens or any other body fluids

Methodology
Chemiluminescent Microparticle Immunoassay (CMIA)

Setup Schedule

Monday, Wednesday, Friday

Limitations

Bilirubin 20 mg/dL
Hemoglobin 1000 mg/dL
Low Protein 3 g/dL
High Protein 12 g/dL
Triglycerides 6000 mg/dL
Heparin 1 U/mL

Reference Range

Less than 11.0 umol/L

Clinical Significance

Homocysteine values can assist in the diagnosis and treatment of patients suspected of having
hyperhomocysteinemia and homocystinuria

Performing Laboratory
Piedmont Athens Regional

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.