30560:UREA NITROGEN (BUN)

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30560:UREA NITROGEN (BUN)
Alias Names: BUN
Methodology: Enzymatic Rate
Edit Date: 6/11/2010
Performed: Daily
Released: Same day as tested
CPT Code: 84520
Specimen Collection Details
Collection: One 7.5 mL serum separator tube (SST). Also acceptable: One 4 mL green top tube (heparin), one 4.5 mL plasma separator tube (PST), or one 4 mL lavender top tube (EDTA).
Handling: Allow to clot, centrifuge SST or PST within 2 hours of collection and transport in original tube. Centrifuge heparin or EDTA within 2 hours of collection and separate the plasma into a plastic vial. Refrigerate.
Stability: 6 days refrigerated or 30 days frozen.
Standard Volume: 2 mL serum or plasma.
Minimum Volume: 0.5 mL serum or plasma.
Transport: Refrigerated.
Rejection Criteria: Tubes used other than those specified.

8-20 mg/dL

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