Homocysteine and Methylmalonic Acid
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To assist in evaluating increased risk for blood clots, plaque formation, and platelet aggregations associated with atherosclerosis and stroke risk.
Serum collected in a gold-, red-, or red/gray-top tube if methylmalonic acid and homocysteine are to be measured together. Alternatively, plasma collected in a lavender-top (EDTA) tube may be acceptable for the homocysteine measurement. The laboratory should be consulted before specimen collection because specimen type may be method dependent. Care must be taken to use the same type of collection container if serial measurements are to be taken.
|Conventional & SI Units|
|Methylmalonic Acid||70–270 nmol/L|