Specimen Collection Manual and Test Catalog
PRE DIALYSIS BUN
Geisinger Epic Procedure Code: LAB3471 Geisinger Epic ID: 17574SPECIMEN COLLECTION
Specimen type:
Plasma or
Preferred collection container:
Specimen required:
2 mL of plasma or serum; minimum 0.2 mL.
SPECIMEN PROCESSING
Processing instructions:
Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection.
Transport temperature:
Refrigerated (preferred). Room temperature or frozen specimen also acceptable.
Specimen stability:
Room temperature: 7 days. Refrigerated: 7 days. Frozen: 1 year.
Rejection criteria:
Stability limits exceeded.
TEST DETAILS
CPT code(s):
84520
Note: The billing party has sole responsibility for CPT coding. Any
questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Predialysis blood urea nitrogen (BUN).
Methodology:
Kinetic UV
Spectrophotometric (Colorimetric)
Spectrophotometric (Colorimetric)
Synonyms:
BUNPRE
Clinical significance:
Predialysis BUN is utilized along with postdialysis BUN to evaluate dialysis efficiency.
Doctoral Director(s):
Review Date:
12/27/2024
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC
Sheng-Ying (Margaret) Lo, PhD, DABCC
Performing Locations