One 7.5 mL serum separator tube (SST). Also acceptable: One 5 mL red top tube, one 4 mL green top tube (sodium heparin), or one 4 mL lavender top tube (EDTA). Draw 6-12 hours after oral dose. Note last dose date and time.
Handling:
Allow to clot, centrifuge and separate serum or plasma from cells within 2 hours. Refrigerate. Freeze if specimen cannot be assayed within 48 hours. Allow no more than one freeze/thaw cycle.
Stability:
8 hours ambient or 48 hours refrigerated.
Standard Volume:
0.5 mL serum or plasma.
Minimum Volume:
150 µL serum or plasma.
Transport:
Refrigerated, or frozen on dry ice.
Comments:
Specimen from child less than 2 months of age cannot be assayed using this method. Digibind will interfere with this assay.
Rejection Criteria:
Specimen that has been frozen and thawed more than once; specimen from patient treated with Digibind.
MEDICARE MAY REQUIRE A SIGNED ADVANCE BENEFICIARY NOTICE (ABN) FOR THIS TEST
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