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Test Code LAB93 Homocysteine, Total, EDTA PLASMA

Performing Laboratory

Asante Rogue Regional Medical Center

Specimen Minimum Volume

Minimum requirement 0.5 mL EDTA plasma

Billing Code

2091452

Methodology

Enzymatic

Specimen Requirements

Preferred: Lavender-Yellow_K2E EDTA K2

Acceptable: Lavender top tube

 

**Specimen needs to be placed on wet ice immediately after collection **

Day(s) Test Set Up

Monday through Friday, A.M. shift 

Test Classification and CPT Coding

83090  -  Homocysteine

Additional Information

Diagnosing individuals with potential increased risk factors for coronary artery disease (CAD)


Note:  Failure to place on ice, or failure to centrifuge immediately and separate plasma will result in falsely increased homocysteine values

Performing Department

Chemistry

Reasons for Rejection

Specimens not kept on ice before centrifugation.

Specimens not centrifuged within 1 hour.

Quantity not sufficient (QNS)

Lack of Two Patient Identifiers:

         1-Patient’s First & Last name 

         2-Patient’s Date of Birth

Specimen Transport Temperature and Stability

Aliquoted samples or spun gel barrier (LST) tubes are stable:

4 days room temp

3 weeks at 2-8°C

Frozen 3 months at -20°C