BUN Clearance Test
5 days
Enzymatic (urease)
Accredited Laboratory Partner
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Estimates kidney function based on urea excretion.
Serum and 24 hour urine
1 mL serum and 10 mL urine aliquot
Gel-barrier tube or transport tube and plastic urine container
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Room temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |