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No. For fasting bloodwork, stick to plain water unless your clinician or lab gives different written prep for your specific test.

Yes, drinking coffee before a COVID-19 booster is fine for most adults; stay hydrated and avoid pre-dosing pain relievers.

Yes, moderate coffee before the abortion pill is permitted, but skipping caffeine can reduce nausea, jitters, and dehydration risk.

No—skip coffee for fasting abdominal scans; water is fine, but rules vary for pelvic, obstetric, and other ultrasound types.

Yes, drinking coffee before a COVID-19 vaccine is fine; keep it moderate, stay hydrated, and avoid pre-shot painkillers.

No—before a testosterone blood draw, stick to water only unless your lab gives different instructions.

Yes—wait about 60 minutes after thyroid medicine before coffee; liquid levothyroxine can differ, so follow your prescriber’s plan.

Yes, a modest coffee is usually fine before giving blood, but drink water and skip heavy add-ins close to your appointment.

Yes—light coffee is usually fine before a breast MRI unless sedation is planned; follow your center’s prep rules.

Yes, black coffee is usually allowed before a non-contrast CT, but skip milk, creamers, and follow your facility’s timing rules.