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Methodology: Immunoturbidimetric Assay
Edit Date: 12/16/2008
Performed: Daily
Released: Same day
CPT Code: 80202
Specimen Collection Details
Collection: One 7.5 mL serum separator tube (SST). Also acceptable: One 5 mL red top tube, 4 mL green top tube (heparin), 4.5 mL plasma separator tube (PST), or 4 mL lavender top tube (EDTA). Draw within 30 minutes of next infusion.
Handling: Allow to clot, centrifuge and separate serum or plasma from cells within 2 hours of collection and transport in original tube. Centrifuge green or lavender top tube within 2 hours of collection, separate plasma and pour into a plastic vial for transport. Refrigerate. Freeze if specimen cannot be assayed within 48 hours. Note date and time of last dose.
Standard Volume: 0.5 mL serum or plasma.
Minimum Volume: 150 µL serum or plasma.
Transport: Refrigerated, or frozen on dry ice.
Rejection Criteria: Specimen frozen/thawed more than once; refrigerated specimen received in laboratory more than 48 hours after collection.

Reference Range:
Therapeutic Range
5-20 µg/mL
Toxic (critical level)
>20.0 µg/mL

PeaceHealth Laboratories