Sign in →

Browse by Name

  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #
 

Web Links

General Information

Mayo Clinic Laboratories

Test Code LAB5043 BUN/Creatinine

Performing Laboratory

Asante Rogue Regional Medical Center

Asante Three Rivers Medical Center

Asante Ashland Community Hospital

Specimen Transport Temperature and Stability

Centrifuge and refrigerate within 2 hours of collection.

Spun SST is stable for 24 hours if refrigerated at 2° to 8° C.

Serum stable 48 hours if aliquoted and refrigerated at 2° to 8° C.

Day(s) Test Set Up

Monday through Sunday

Performing Department

Chemistry

 

Specimen Requirements

Lithium Heparin Green top tube (4.0 mL)

Lithium Heparin Green top tube (3.0 mL)

Green microtainer tube

Yellow (Gold) top tube (SST)

Reasons for Rejection

Lacking Two Patient Identifiers

QNS – Quantity Not Sufficient

Clotted

 

Methodology

Same as BUN and Creatinine stand alone tests.

 

 BUN  Urea is hydrolyzed enzymatically by urease to yield ammonia and carbon dioxide. The ammonia and α-oxoglutarate are converted to glutamate in a reaction catalyzed by L-glutamate dehydrogenase (GLDH).

 

Creatinine:  Kinetic alkaline picric acid