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JLP Phlebotomy Practice Exam

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What should be placed into an ice bath if processing is delayed for more than 30 minutes?
Correct Answer:
Lactic Acid
Explanation:
When certain blood analytes are being measured, especially lactate, they can change quickly after collection due to ongoing cellular metabolism. Lactic acid increases if the sample isn’t kept cold, because red blood cells and other cells keep glycolysis going. Putting the specimen in an ice bath slows enzymes and metabolic activity, helping preserve the in vivo lactate level until the sample can be processed. The other options don’t relate to preserving a blood specimen for lactate testing, so they aren’t appropriate choices in this context.

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