Blood ethanol concentrations are less stable than serum or plasma upon storage because of oxyhemoglobin-mediated oxidation of ethanol to acetaldehyde.
Wigmore
J G
JG
D000079:Acetaldehyde / Q000097:blood* / Q000737:chemistry; D001800:Blood Specimen Collection; D002492:Central Nervous System Depressants / Q000097:blood* / Q000737:chemistry; D004355:Drug Stability; D000431:Ethanol / Q000097:blood* / Q000737:chemistry; D005554:Forensic Medicine / Q000379:methods; D006801:Humans; D010084:Oxidation-Reduction; D010108:Oxyhemoglobins / Q000378:metabolism*; D010949:Plasma / Q000737:chemistry*; D044967:Serum / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors
D002492:Central Nervous System Depressants; D010108:Oxyhemoglobins; D000431:Ethanol; D000079:Acetaldehyde