The initial drop of blood that appears after a finger or heel puncture is often contaminated with tissue fluid and skin cells from the puncture itself. This dilution or contamination can interfere with many laboratory tests, leading to inaccurate results. For example, it could falsely lower the concentration of cells or analytes you're trying to measure. By wiping it away with a dry cotton ball, you ensure that the subsequent drops used for testing are pure, undiluted capillary blood, which gives a more reliable representation of the blood's true composition.

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Zambia

• Joseph Soko – 101 pts

• Visual Pathway Lesions
• Positive and Negative Symptoms
• Hallucinations and Delusions
• Antipsychotic Medications
• Emergency: Environmental Emergencies