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Blood Urea Nitrogen

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Blood Urea Nitrogen

Tube type

Full SST tube

Test Includes

Blood Urea Nitrogen

Order code

Available stat?

Yes

Alias

BUN

Preferred sample

Serum

Minimum volume

2.0 mL

Special handling/ Processing

Centrifuge within >30 minutes and <120 minutes of collection

Sample stability

7 day @ 4C

Transportation

Regular courier service, room temp

Test frequency

Daily

Causes for rejection

Improper tube; QNS

Reference range

(7-17 mg/dL- Female) - (9-20 mg/dL - Male) - (7-25 mg/dL)

Possible critical values

BUN >80

CPT Code

84520

Methodology

Colormetric

LOINC Code

3094-0

Additional Information

Included in BMP, CMP, and RENAL profiles

Inside Information

Other acceptable sample types: Heparinized (green top) tube with or without gel - Plain red top tube

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