Test Code URE Urea, serum

Additional Codes

Epic Ordering Code	LAB140
NBS code	LBC05028
Service code	31116

Specimen Requirements

Submit only one of the following:

Preferred:	Acceptable:
Yellow Top	Light Green Top

Processing Requirements

Allow specimen to clot for 30 mins (Yellow Top) and centrifuge within 2 hours

Specimen type: Serum/Plasma

Volume: 0.5mL

Specimen Stability

Specimen Type	Serum
Ambient	7 days
Refrigerate	7 days
Frozen	1 year

Specimen Condition

Haemolysis	OK
Icterus	OK
Gross Lipaemia	Alert/Reject
Others	Not applicable

Methodology

Enzymatic Assay

Days and Times Performed

24 hrs, TAT 1 day

Reference Interval

Age	Male	Female
0 – 14 days	1.0 – 8.2 mmol/L
15 days – < 1 yr	1.2 – 6.0 mmol/L
1 – 9 yrs	3.2 – 7.9 mmol/L
9 – 18 yrs	2.6 – 7.5 mmol/L	2.6 – 6.8 mmol/L
19 – 49 yrs	3.2 – 7.4 mmol/L	2.5 – 6.7 mmol/L
≥ 50 yrs	3.0 – 9.2 mmol/L	3.5 – 7.2 mmol/L

Testing Laboratory

National University Hospital

Clinical Chemistry, 67724346

Useful For

Assessment of renal function.

Evaluation of protein metabolism.

Update

Last updated 28/07/2026

LOINC Code Information

14937-7

Alias

Blood Urea Nitrogen (BUN), Serum