3 - 15 days
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High Performance Liquid Chromatography (HPLC)
Adult (>or=10 years): 0.50 - 8.45 mcg/mL; Pediatric (<10 years): 0.50 - 8.91 mcg/mL.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect specimen in a lavender top tube. Send to Specimen Processing in a green bag. Specimen must be spun and protected from light within 30 minutes of collection.
Collect specimen in a lavender top tube. Centrifuge, aliquot plasma into an amber PFL plastic vial and freeze within 30 minutes of collection.