1.0 mL Serum from a Red Top Tube in a Plastic Vial
3 days Ambient
5 days Refrigerated (Preferred)
1 month Frozen
Specimen should be drawn 1hour prior to next dose
Do not collect in a Serum Separator Tube (SST or PST)
Centrifuge and separate from cells immediately
0.5 mL
Trough: 30 - 50 mcg/mL
Peak ranges depend on dosage amount. See Interpretive Report.
3 to 6 days
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