Fasting longer than 12 hours before a lab test generally does not provide an advantage over fasting for 8–12 hours, according to new research. A large study of routine outpatient laboratory testing suggests that most tests are minimally affected by the length of time that the patient spends fasting beforehand, potentially changing perspectives on uniform fasting requirements. As published in JAMA Internal Medicine, researchers analyzed 9.8 million test results from 101,148 adults using laboratory data …
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