FIRST Lavender Top Tube:
Used for RBC Folate testing. Protect from light during collection, storage and shipment.
Specimen must be well-mixed and transferred to an amber plastic vial (preferred) before freezing or to an aliquot tube protected from light. Freeze immediately. CRITICAL FROZEN.
Glass vacutainers are not suitable for freezing and transport.
SECOND Lavender Top Tube:
Used for hematocrit testing. Refrigerate. (See Notes section under Testing Information below for explanation.)
NOTE: Separate samples must be submitted in plastic container when multiple tests are ordered.