Casey Wilson writes:

Long-term correction of blood pH requires the kidneys to excrete the acid or
base in urine.

The acid or base. QED.

The normal pH is very close to 7 (neutral).

Your provider may want to modify your urine pH to help prevent kidney
stones. Acidic urine is associated with xanthine, cystine, uric acid, and
calcium oxalate stones. Alkaline urine is associated with calcium carbonate,
calcium phosphate, and magnesium phosphate stones.

Acid, alkaline. See?

The normal values range from 4.6 to 8.0.

And the average is just about 7.0.

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