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Fasting before blood tests: Are we making it harder on ourselves without reason?
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Ynet HealthHE
October 21, 2026

Fasting before blood tests: Are we making it harder on ourselves without reason?

Longer fasting does not necessarily improve the accuracy of blood tests: a huge study found no measurable advantage to fasting beyond 12 hours compared to eight to twelve hours. Dr. Itamar Tzadok, family medicine specialist at Clalit: "When there is no medical value to prolonged fasting, there is no reason to burden patients. I hope the guidelines will change."

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Curated from Ynet Health. Classified as Health by AI, which sometimes makes mistakes.

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