G6PD (Quantitative) RBC | KK Women's and Children's Hospital

Specimen Container

EDTA tube

Specimen Requirement

Whole Blood EDTA
Adult: 3 mL blood
Paediatric and Neonate: 500 uL blood

Gently invert tube 10 times immediately after blood sample has been taken. This is extremely important to avoid micro-clotting and thus ensures that the results are reliable.

Orderable as Urgent?

Turn Around Time

Batch testing at 0800 hrs and 1500 hrs

Reference Value(s)

G6PD (Quantitative), RBC
Age Group	Gender	Reference Interval
0 – 6 months	Female & Male	9.4 – 18.5 U/g Hb G6PD activity < 1.2 U/g Hb indicates severe deficiency (WHO Class I / II variants) G6PD activity 1.2 to 7.4 U/g Hb indicates partial deficiency (WHO Class III variants)
6 months – 12 years	Female & Male	8.2 – 16.8 U/g Hb G6PD activity < 1.1 U/g Hb indicates severe deficiency (WHO Class I / II variants) G6PD activity 1.1 to 6.5 U/g Hb indicates partial deficiency (WHO Class III variants)
>12 years	Female & Male	7.2 – 12.7 U/g Hb G6PD activity < 0.9 U/g Hb indicates severe deficiency (WHO Class I / II variants) G6PD activity 0.9 to 5.6 U/g Hb indicates partial deficiency (WHO Class III variants)

Testing Laboratory Location

KKH

Laboratory

Clinical Chemistry

Contact Number

6394 1383

Day and Time Performed

Daily in 2 batches

Orderable on CPOE?

Yes

Downtime Form

Clinical Chemistry - Form A

Change History Notes

31 Oct 2023 12:00 AM

Updated Reference Value(s).
17 Mar 2023 12:00 AM

Updated Reference Value(s).
17 Oct 2022 01:00 PM

Update of reference interval.
15 Aug 2022 12:00 AM

Updated Test Name, Specimen Requirements and Reference Value(s).
19 Oct 2021 03:35 PM

Update Specimen Requirement.

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Last Updated - 28 May 2025