Ammonia, plasma | KK Women's and Children's Hospital

Specimen Container

Lithium heparin 2 mL tube

(To be obtained from DPLM Client Services, after office hour call extension 1383)

Specimen Requirement

Whole blood
0.4 mL blood

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

Place this in a biohazard specimen bag and immerse this bag into another bag with crushed ice. Send immediately to lab.

This test is not available for external clients due to stability reason.

Orderable as Urgent?

Yes

Turn Around Time

Average 1 hr (30 mins - 1.5 hrs)

Reference Value(s)

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:
≤ 1 month: >120 µmol/L
> 1 month: >100 µmol/L

Change History Notes

14 Sep 2026 09:19 AM

Update Specimen Storage/Transport.
12 Jul 2024 12:00 PM

Updated Reference Value(s).
04 Jul 2024 08:00 AM

Updated Reference value and Additional information.
19 Oct 2021 11:20 AM

Updated Specimen Container, Specimen Requirement and Reference Value(s).

Last Updated - 14 Sep 2026