What should I eat the night before a fasting glucose test?
                                
                                
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                                    4 min read                                
                            
                                According to the Cleveland Clinic, a fasting glucose test requires you to consume nothing but water for 8 to 12 hours prior to the test. So, what should I eat the night before a fasting glucose test to ensure accurate results? The answer is straightforward: you can eat a normal, balanced meal before your fasting window begins, but a few important guidelines apply.