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Sodium fluoride / potassium oxalate (grey-top tube)

The standard blood collection tube for forensic ethanol analysis. Sodium fluoride inhibits microbial fermentation (which would produce artefactual ethanol post-collection); potassium oxalate is the anticoagulant to prevent clotting.

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Related terms

2100:1 partition ratioBeta elimination rate (beta)Blood alcohol concentration (BAC)DB-ALC1 / DB-ALC2Internal standard (IS)NIST SRM 1828Partition coefficient (K)Static headspaceWidmark factor (rho / r)

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