Dilution studies.

Abstract

<p>The arrow indicates the precipitated protein within the tube (V0) after centrifugation of the test solution consisting of 1 mL plasma and 4 mL ethanol 70%. Concentrations decrease from left to right. Tubes with test solutions containing ethanol locks of ≤28% in the dilution series (V6 toV9) revealed no signs of precipitation. The test series was performed at room temperature (24°C).</p