Can You Have Black Coffee While Fasting For A Blood Test 27 years experience general practice.

Can you have black coffee while fasting for a blood test A 71 year old female asked.

Can you have black coffee while fasting for a blood test. This is a tricky question as some doctors will tell you that you can have coffee or tea as long as it is unsweetened. Can i have black coffee before a fasting blood test. Is it ok to drink black coffee when your fasting for blood test. But the coffee and tea can mess with some test results so it is best to avoid them altogether when you are going in for fasting bloodwork.

These tests typically require fasting. Yes you can drink black coffee or tea or pretty much any non caloric beverage if you re doing intermittent fasting if. Fasting tests common fasting tests evaluate blood levels of glucose triglycerides hdl cholesterol and ldl cholesterol and c reactive protein to gauge diabetes and cardiovascular risks and conditions. Although some doctors may allow you to drink a small cup of unsweetened coffee prior to a cholesterol blood test is advisable to avoid it while fasting for the test since as little as it will the result does affect the test result.

You need only plain water without added vitamins flavoring or carbonation to achieve the correct fluid and electrolyte balance in your blood chemistry prior to fasting labs. Even if you drink it black coffee can interfere with blood test results. Can you drink coffee while fasting for blood work.