kidney (renal) stones

Q | what are infection stones?

A | Infection stones consist of a mixture of magnesium, ammonium and phosphate mixed with carbonate salts. They are more common in women who suffer with urinary tract infections.

They usually occur when the urine is alkaline (pH above 7) and when there is ammonia in the urine. Certain bacteria that cause urinary infections can also produce ammonia leading to the formation of these stones.

Infection stones can be very large, even filling the whole kidney system, forming a staghorn calculus.