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Test Code BUN BUN

Additional Codes

LAB140

Performing Laboratory

Porter Hospital Laboratory

Specimen Requirements

Specimen Type: Blood
Container/Tube: Tiger top, serum gel
Also Acceptable: Green top (Lithium Heparin)
Specimen Volume: Full tube, submit 0.5 mL serum
Specimen Minimum Volume: 0.3 mL
Collection Instructions:
1. Send specimen in original tube.
2. If there is a delay in transport of >1 hour, centrifuge tube.
3. Centrifuged samples are stable for:
• 3-5 days at room temperature
• 7 days at 2-8 °C

Specimen Transport Temperature

Refrigerated

Test Classification and CPT Coding

84520

Test Schedule / Analytical Time / Test Priority / Turn Around Time

Daily / 24 hours / Available STAT / Routine - 4 hours

                                                         STAT - 60 minutes

Normal Reference Values

>17 yrs: 7-25 mg/dl

Critical Values

None