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Time Sensitive
Ordering Recommendation

Use to diagnose increased carbon monoxide (CO) levels and CO poisoning.

Mnemonic
CARBOXY HB
Methodology

Spectrophotometry

Performed

Varies

Reported

1-4 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Green (sodium or lithium heparin). Do not collect by finger stick or heel stick.

Specimen Preparation

Keep specimen anaerobic; do not remove cap from collection tube. Refrigerate within 30 minutes after collection. Transport 5 mL whole blood. (Min: 0.5 mL) Specimen should be received within 24 hours of collection.

Storage/Transport Temperature

Refrigerated. Separate specimens must be submitted when multiple tests are ordered.

Unacceptable Conditions

Specimens collected in EDTA tubes or not anaerobically. Specimens that have been opened or exposed to room air. Frozen or room temperature specimens. Specimens containing air bubbles or clots.

Remarks
Stability

Ambient: Unacceptable; Refrigerate: 72 hours; Frozen: Unacceptable

Reference Interval

Effective February 21, 2011

0.0-2.0 percent

Interpretive Data

Individuals who smoke typically demonstrate higher Carboxyhemoglobin values than non-smokers.


Non-smokers 0-2.0 percent
1-2 packs per day 0-5.0 percent
3-4 packs per day 0-9.0 percent

Compliance Category

FDA

Note
Hotline History
N/A
CPT Codes

82375

Components
Component Test Code* Component Chart Name LOINC
2005759 Carboxyhemoglobin Quantitation 20563-3
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Carbon monoxide
  • Co-ox
  • Co-oximetry
  • COHb concentration
  • COHb levels
  • COHb percent
  • COHb%
Carboxyhemoglobin Quantitation, Whole Blood by Co-Oximetry