30560:UREA NITROGEN (BUN)
Author PeaceHealth Laboratories
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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. |