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Cataract surgery fasting depends on sedation: local-only cases may eat; deeper sedation or general anesthesia usually means fasting.

Yes, most clinics ask you to stop food 6–8 hours before an upper endoscopy, with clear liquids allowed until a set cutoff time.

No, you usually don’t need to fast for an antibody test unless your order also includes fasting labs like glucose or lipids.

Most pelvic ultrasounds don’t require fasting, but the scan route and any paired abdominal scan can change your prep.

Most herpes blood tests don’t require fasting, so you can eat and drink normally unless your lab order includes other fasting labs.

Most MRI with contrast scans let you eat as usual, but certain exams or sedation call for a short fast your imaging center will state.

Most adults are told not to eat or drink for 6–8 hours before an esophagram, but your imaging center’s prep sheet is the rule to follow.

No, fasting isn’t needed for a celiac disease panel, yet you must be eating gluten or the blood markers can fall.

No, high-sensitivity CRP testing usually doesn’t need fasting, but you may need to fast if your order includes other blood tests.

No, most serology tests don’t need fasting, but your lab order may include other blood work that does.