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Methaemoglobin

Laboratory:Clinical Biochemistry
Test Code:BG SPEC
Specimen Types:Blood
Container Types:
Arterial Blood Gas Syringe
Venous Blood Gas Syringe
Adults Volume or Mass:2 mL
Collection & Request Instructions:

Of value in investigating patients with cyanosis and a normal pO2. Levels may be raised in congenital haemoglobin M disorders and drug toxicity associated with nitrites or other oxidising agents

Transport Instructions between Sites and/or Laboratories:

Reference Range:  < 2% of Total Haemoglobin

Levels may be higher in infants.

Assay Frequency:Daily
Additional Notes:

Both  Arterial and Venous Blood Gas specimens are acceptable.

Methaemoglobin is now automatically reported on every blood gas request.