Gas Chromatography (GC)
Spectrophotometry (SP)
Suggested CPT Code(s)
New York State Approval Status


Turnaround Time

7 days (If Positive: 12 days)

Test Includes
1 Carboxyhemoglobin COHb Spectrophotometry (SP) %Saturation 5 Biological Marker (Exposure)
2 Dichloromethane Methylene Chloride Gas Chromatography (GC) mcg/mL 0.5 Environmental/Occupation Toxin

Reflex Tests
Test Code Test Name
5737B Carbon Monoxide Quantitation/Confirmation, Blood
Compliance Statement
This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the US Food and Drug Administration.
Sample Type
Requested Volume
6 mL
Minimum Volume
2.8 mL
Special Handling
Tube should be filled to prevent loss of volatile analyte into headspace. Ensure that container remains tightly sealed.
Sample Container
Gray top tube (Sodium Fluoride / Potassium Oxalate), Lavender top tube (EDTA)

Additional Collection Instructions

Transport Temperature
Light Protection
Not Required
Rejection Criteria
Received Room Temperature. Received Frozen.

Rejection criteria pertain to clinical sample submissions only.

Room Temperature: 5 day(s)
Refrigerated: 10 day(s)
Frozen (-20 °C): Not Stable

The CPT Codes provided in this document are based on AMA Guidelines and are for informational purposes only. NMS Labs Does not assume responsibility for billing errors due to Reliance on the CPT Codes listed in this document.

*The information contained in this document represents database configurations, as they will appear on the effective date listed above.