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Test Directory




Expected Turnaround

24 hours

Determination of blood urea nitrogen is the most widely used screening test for renal function. When used in conjunction with serum creatinine determinations it can aid in the differential diagnosis of the three types of azotemia: prerenal, renal and postrenal.


Urease/Glutamate dehydrogenase (GLDH)



Room Temperature: 7 days Refrigerated: 7 days Frozen: 1 year

BUN; Blood urea nitrogen; Urea nitrogen; Urea

Serum, gel separator, SST

1 ML

18 - 60



6 mg/dL - 20 mg/dL

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