Blood Urea Nitrogen (calculated from urea measurement)

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Testing Laboratory

Auckland Te Toka Tumai | Auckland Hospital

Department

Chemical Pathology

Delphic Registration Code (Alpha Code)

SBUN

Test Code (Numeric Code)

3805

Laboratory Handling

Sample Stability

-

Synonyms

BUN (Blood urea Nitrogen)

Turnaround Time

3 hours

Specimen Type

  • Plasma
  • Serum

Specimen Requirements

Tube/Container Type:

Preferred
  • Lithium Heparin PST- Gel (Light Green Cap)
Acceptable
  • Heparin (Microtainer)
  • Lithium Heparin - Non-gel (Green Cap)
  • Lithium Heparin PST- Gel (Light Green Cap)
  • Plain (Red Top)
  • SST II (Gold Cap)
Minimum Sample Volume (ml)

4.5

Paediatric Specimen Requirements

Tube/Container Type:

Preferred
  • Heparin (Microtainer)
Acceptable
  • Lithium Heparin - Non-gel (Green Cap)
  • Lithium Heparin PST- Gel (Light Green Cap)
  • Plain (Red Top)
  • SST II (Gold Cap)
Minimum Sample Volume (ml)

0.5

Additional Specimen Information

4.5 mL PST Blood (Preferred - effective from 4th Mar 2013)
Heparin 5 mL Heparin Blood
Plain 4 mL Plain Blood
SST 3.5 mL SST Blood
Microsample 0.5 mL Paediatric Microsample Blood
Micro-heparin 0.5 mL Paediatric Micro-heparin Blood

Last updated: 12/03/2026