Exploring what to consider before having coffee when you're due for a non-fasting blood test.
Only plain black coffee is discussed here; additives can distort your test results significantly.
Non-fasting tests allow for eating, but caffeine can still interfere with certain results.
Caffeine acts as a diuretic, which can lead to mild dehydration and affect your blood test outcomes.
Caffeine can temporarily raise blood pressure and heart rate, important factors for certain tests.
Drinking coffee can elevate cortisol levels, skewing tests designed to measure this hormone.
Tannins found in coffee can severely affect your iron absorption, which impacts related blood tests.
Caffeine may influence kidney filtration rates, impacting critical test readings.
Avoid coffee before tests like KFT, cortisol, iron profile, and blood pressure measurements.
Decaffeinated coffee and tea can still interfere; it's best to avoid them before tests.
Hydration with plain water is the safest choice before any blood test.