Collection Notes: Centrifuge the specimen as soon as possible after complete clot formation has taken place. If immediate centrifugation is not possible, then collected blood specimens should be kept on ice and centrifuged within 1 hour.
Clinical Utility: Elevated levels of Homocysteine are observed in patients at risk for coronary heart disease and stroke.
Serum (1 mL)
Refrigerated 4 Days
Frozen 2 Months
Plasma (1 mL) Li Heparinized or EDTA
Refrigerated 4 Days
Frozen 2 Months
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