An automated CBC reports platelets 28 × 10^9/L with a platelet-clump flag. The patient has no bleeding symptoms and previous counts were normal. What is the best first laboratory response?

• 1 Release the count as critical without review, assuming the automated flag is a false alarm and no further investigation is needed, as the patient has no bleeding history
• 2 Examine a peripheral smear for clumps and obtain a properly collected specimen in an alternative anticoagulant if needed ✓ 정답
• 3 Manually change the platelet count to the previous value, disregarding the current automated result and any potential patient changes, as the difference is likely due to laboratory error
• 4 Incubate the EDTA tube overnight and repeat the count, expecting platelet disaggregation, which may resolve the pseudothrombocytopenia

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