Test Code METHB Methemoglobin, Blood
Performing Laboratory
North Ottawa Community Hospital
Specimen Requirements
Specimen must be tested within 1 hour of draw.
Specimen Type: Whole blood
Container/Tube: Lithium Heparin green top (dark green cap)
Specimen Volume: Full tube
Collection Instruction:
1. Tube must be completely filled.
2. Place specimen on wet ice and forward promptly.
Reference Values
0.4%-1.5%
Day(s) Test Set Up
Daily
Methodology
Optical Absorbance
Specimen Transport Temperature
On wet ice
Test Classification and CPT Coding
83045