Epic Code LAB91 Methemoglobin
Test Name Alias
Methemoglobin Level | CRITCARE METHGB | CRITCARE METHEMOGLOBIN [LAB1230305]
Interface Order Alias
10432
Collection Instructions
Specimen collection: Whole blood
Container: Heparinized Blood Gas Syringe or Capillary Tube |
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- NOTE: Capillary tube is not acceptable at St. Joseph Lab
- Minimum volume: 0.5 mL in a 1 mL syringe, 175 uL in a capillary tube
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Collection Instructions:
- Arterial, venous, and capillary blood specimens are acceptable.
- Capillary specimens should be limited to pediatric patients and must be hand delivered.
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Corewell Health Medical Center - Grand Rapids (BW, HDVCH, MHC) and Blodgett (BL)
- Call Respiratory Satellite Lab and tube to Respiratory
- Blodgett: 616-382-2122 - Tube Station 411
- Helen DeVos Children's Hospital (HDVCH): 8 CH – 616-352-6027 - Tube Station 912
- Butterworth (BW): 5 MHC – 616-352-5756 - Tube Station 881
- Hand deliver to any Respiratory Satellite Lab.
- Call Respiratory Satellite Lab and tube to Respiratory
- CHW Regional Hospitals: Hand deliver to lab immediately.
- CHS Hospitals: Hand deliver to lab immediately.
Container: Dark Green top (Lithium Heparin) non-gel tube - CHW REGIONAL HOSPITALS OR CHS ONLY |
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- Minimum volume: 2 mL in a tube
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Collection Instructions:
- Do not spin, separate or expose to air.
- Keep tube capped.
- Hand deliver to lab immediately.
Specimen Stability
Ambient: 4 hours
Test Frequency
Available 24 hours, usual TAT 1 day
Performing Department
Respiratory Care (GR Medical Center and Blodgett)
Chemistry (all Regional Hospital sites and CHS)
Performing Department Laboratory Location
CHW:
Corewell Health Butterworth Respiratory, Grand Rapids, MI
Corewell Health HDVCH Respiratory, Grand Rapids, MI
Corewell Health Blodgett Respiratory, East Grand Rapids, MI
CHW Regional Hospital Sites:
Corewell Health Big Rapids Laboratory, Big Rapids, MI
Corewell Health Gerber Laboratory, Fremont, MI
Corewell Health Greenville Laboratory, Greenville, MI
Corewell Health Ludington Laboratory, Ludington, MI
Corewell Health Pennock Laboratory, Hastings, MI
Corewell Health Reed City Laboratory, Reed City, MI
Corewell Health Zeeland Laboratory, Zeeland, MI
CHS:
Corewell Health Lakeland St. Joseph Laboratory, St. Joseph, MI
Corewell Health Lakeland Niles Laboratory, Niles, MI
Methodology
Methodology is available on request.
CPT
83045
83050
CDM Code
3018305001
3018304501
Epic Test ID
1230100930
LOINC
Methemoglobin: 2614-6
Reviewed Date
2/11/2025
Updated Date
5/1/2025 - CHS info added
5/9/2025 - Pennock Laboratory added to performing locations