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Fasting for a Blood Test? Here's What You Can Drink Safely HealthcareOnTime Fasting Before a Blood Test: Should You Avoid Coffee? CAFELY Does Nicotine Affect Blood Work: Complete Adult Buyer's Guide 2025 Yes, you can drink plain water before a fasting blood test! Staying hydrated actually helps your veins stay visible and makes the blood draw easier. Just remember avoid tea, coffee What happens if you eat before a fasting blood test? HealthcareOnTime How to prepare for a fasting blood test: what you can and cannot do HealthcareOnTime
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