Tap Water (1 Cup)

Plain tap water should not meaningfully raise blood glucose; recheck after washing and thoroughly drying your hands, since food or drink residue can affect a finger-stick result.

Confirm the reading with a new test strip or a second measurement, and note whether the rise may reflect normal timing, stress, illness, exercise, or a recent meal rather than the water.

Avoid adding sweeteners, flavored water enhancers, juice, syrup, or electrolyte powders to your water unless they are explicitly sugar-free.

Drink water steadily through the day rather than forcing a large amount at once; hydration supports normal glucose management but does not need to be used as a treatment for a high reading.

If repeated rises occur after plain water or readings are unexpectedly high, discuss your meter technique, medications, and symptoms with a clinician; seek urgent care for severe symptoms or persistently very high readings.