What should you do with the first drop of blood in a capillary blood sample?

In capillary blood collection, the first drop of blood that is obtained should be wiped away because it often contains interstitial fluid and contaminants that can affect the accuracy of the test results. When blood is drawn from a capillary site, the initial drop may not represent the true composition of the blood due to dilution from tissue fluid, which could skew lab results.

By wiping away the first drop, a more accurate sample is then collected with the next drop, ensuring that the blood being tested is representative of the individual's actual blood constituents. This practice enhances the reliability of diagnostic testing, making it essential in clinical settings.