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Boca Biolistics Reference Laboratory > Test Menu > B > BUN (UREA NITROGEN)

BUN (UREA NITROGEN)

Abbreviation

BUN

Transport Temp

2-8 C (ice packs)

Stability

store at 2-8 C up to 7 days, -20C up to 1 year

Minimum Vol

0.5 mL

Alternative Specimens

Plasma (lithium heparin or sodium heparin)

Reference Ranges

<50 years of age: Male 8.9-20.6 mg/dL Female 7.0-18.7 mg/dL >50 years of age: Male 8.4-25.7 mg/dL Female 9.8-20.1 mg/dL

Collection Instructions

Routine venipuncture

Transport Container

Draw tube or plastic pour off tube

Methodology

Urease

Clinical Significance

evaluation of kidney function, requested in conjuction with creatinine for the differential diagnosis of prerenal(cardiac decompensation, water depletion, increased protein catabolism), renal (glomerulonephritis, chronic nephritis, polycystic kidney, nephrosclerosis, tubular necrosis), and postrenal (onstructions of the urinary tract) hyperuremia.

Alternative Names

Urea Nitrogen

Anything else included in test?

N/A

Preferred Specimen

Serum

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