Can I Have Black Coffee Before Blood Work. The do’s and don’ts of fasting before bloodwork. What can you drink when fasting for a blood draw?
Even if it’s black, coffee can affect your blood test result. That’s because it contains caffeine and soluble plant matter, which might skew your test results. A common fasting lab test such as cholesterol measurement or lipid panel measurement should not be affected by these beverages.
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Many family physicians may have a different answer here. Does coffee affect fasting blood sugar? Every place i have worked at in a twenty plus year long career has allowed fasting patients to drink water or black coffee prior to their annual physicals or when they are coming in for fasting blood testing. Yes, in most cases, you may drink black coffee before a “fasting” blood test (or black tea if that’s your preference).
