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Test ID COHBB Carbon Monoxide, Blood

Test Down Notes

This test is temporarily unavailable due to instrument issues. As an alternate, order FCMEB. For additional details, see test update here.


Ordering Guidance


This test is not available for autopsy or cadaver specimens.



Specimen Required


Container/Tube: Lavender top (EDTA)

Specimen Volume: 1 mL

Collection Instructions:

1. Avoid exposure of specimen to atmosphere.

2. Send specimen in original collection tube. Do not aliquot.


Forms

If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.

Useful For

Verifying carbon monoxide toxicity in cases of suspected exposure

Method Name

Carboxyhemoglobin Co-oximetry

Reporting Name

Carbon Monoxide, B

Specimen Type

Whole Blood EDTA

Specimen Minimum Volume

0.1 mL

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood EDTA Ambient (preferred) 14 days
  Frozen  14 days
  Refrigerated  14 days

Reference Values

Normal Concentration

Non-Smokers: 0-2%

Smokers: ≤9%

Toxic concentration: ≥20%

Day(s) Performed

Monday through Friday

Report Available

Same day/1 to 3 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

LOINC Code Information

Test ID Test Order Name Order LOINC Value
COHBB Carbon Monoxide, B 20563-3

 

Result ID Test Result Name Result LOINC Value
8649 Carbon Monoxide, B 20563-3

CPT Code Information

82375