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Frequently Asked Questions
FAQs Ordering Tests Preparing Your Specimen
What is the blood collection process for my specimen?
Most laboratory tests are performed on anticoagulated plasma, serum or whole blood. In general, specimens should be refrigerated until placed in the courier box for transport to the laboratory.
Plasma: Draw a sufficient amount of blood with indicated anticoagulant to yield necessary plasma volume. Gently mix blood collection tube by inverting 6 to 10 times immediately after draw. If required, separate plasma from cells by centrifugation within 20 to 30 minutes.
Serum: Draw a sufficient amount of blood to yield necessary serum volume. Allow blood to clot at ambient temperature; then separate serum from clot by centrifugation within 20 to 30 minutes. Caution: avoid hemolysis.
Whole Blood: Draw a sufficient amount of blood with indicated anticoagulant. Gently mix blood collection tube by inverting 6 to 10 times immediately after draw.