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Cardio IQ® Homocysteine
Test Code91733
CPT Codes
83090
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Other Acceptable Specimens
Trace metal-free, no additive (royal blue-top) tube
Instructions
Red top tubes: Place the specimen in a refrigerator or ice bath for 30 minutes after collection. Centrifuge the specimen as soon as possible after complete clot formation has taken place. Transfer the serum to a plastic screw-capped vial.
Barrier gel separator tubes: Place the specimen in a refrigerator for 30 minutes after collection. Centrifuge the specimen as soon as possible after complete clot formation has taken place. Do not
place barrier tubes in an ice bath as freezing may prevent the barrier gel from adequately separating serum from cells.
Barrier gel separator tubes: Place the specimen in a refrigerator for 30 minutes after collection. Centrifuge the specimen as soon as possible after complete clot formation has taken place. Do not
place barrier tubes in an ice bath as freezing may prevent the barrier gel from adequately separating serum from cells.
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 4 days
Refrigerated: 14 days
Frozen: 6 months
Refrigerated: 14 days
Frozen: 6 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic • Unseparated serum or plasma • Whole blood specimens
Methodology
Enzymatic
Setup Schedule
Set up: Tues-Sat; Report Available: 1-2 days
Clinical Significance
An elevated concentration of Homocysteine is an independent risk factor for cardiovascular disease.
