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Methodology: Gas Chromatography / Nitrogen Phosphorus Detection (GC/NPD)
Edit Date: 9/9/2010
Performed: Daily
Released: 24-48 hours after setup at PeaceHealth Laboratories’ reference lab.
Specimen Collection Details
Collection: One 5 mL red top tube. Do not use serum separator tube (SST) or plasma separator tube PST). Also acceptable: Heparinized plasma.
Handling: Allow to clot, centrifuge and separate serum or plasma into a plastic vial. Refrigerate.
Standard Volume: 3 mL serum or plasma.
Minimum Volume: 0.6 mL serum or plasma (micro method does not allow for repeat testing or confirmations)
Transport: Refrigerated.
Comments: Trough levels are most reproducible.
Rejection Criteria: Use of SST or PST.

Reference Range:
30-50 ng//mL

PeaceHealth Laboratories