Inadequate inversion can lead to which outcome?

• A. Hemolysis.
• B. Excess rapid clot formation.
• C. No effect on test results.
• D. Inaccurate test results due to improper mixing.

Answer: (D)

Proper mixing of blood with anticoagulant in collection tubes is essential for accurate lab results. If inversion is inadequate, the additive and blood don't distribute evenly, leaving areas where anticoagulant is insufficient and clotting can begin or the plasma isn’t consistently treated. This uneven mixing skews test outcomes, since many assays rely on uniformly anticoagulated plasma. The result is inaccurate test results. Hemolysis tends to come from rough handling or excessive agitation, not simply from inadequate mixing, and no effect isn’t correct because inadequate mixing does alter results.