Uric Acid | KK Women's and Children's Hospital

Specimen Container

Gel separator tube (Adult)
Microtube (Paeds)

Specimen Requirement

Plain Blood
Adult: 5 mL
Paediatric: 1.3 mL

Invert blood 5 times after blood collection ensures the anticoagulant is well mixed with the blood. This will ensure results are reliable.

Specimen Storage/Transport

Rasburicase can cause enzymatic degradation of uric acid in blood samples, resulting in falsely low uric acid concentrations. To minimise ex vivo degradation of uric acid in blood samples from patients treated with rasburicase, please (1) collect blood into a pre-chilled specimen tube, (2) send it immediately to the laboratory on ice by hand and (3) alert Clinical Chemistry laboratory to analyse the specimen as soon as possible.

Orderable as Urgent?

Yes

Turn Around Time

Stat: Average 45 mins (30 mins - 1 hr)
Routine: Average 2 hrs (1 - 3 hrs)

Reference Value(s)

Age	Reference Range (µmol/L)
	Female	Male
0 - <15 days	164 - 757
15 days - <1 year	94 - 377
1 year - <12 years	106 – 289
12 years - <19 years	153 - 349	156 - 454
≥19 years	140 - 450	150 - 550

Testing Laboratory Location

KKH

Laboratory

Clinical Chemistry

Contact Number

6394 1383

Day and Time Performed

Daily, 24 hrs

Orderable on CPOE?

Yes

Downtime Form

Clinical Chemistry - Form A

Additional Information

Critical Values:
Low: <60 µmol/L and High: >708 µmol/L

Change History Notes

12 Jul 2024 05:00 PM

Updated Reference Value(s).
13 Oct 2021 11:30 AM

Updated Specimen Requirement, Specimen Storage / Transport and Additional Information.

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Last Updated - 27 May 2025