What tests are used to diagnose RTA?
RTA is found by measuring the bicarbonate in the blood. Bicarbonate is the alkali that balances body acid. If bicarbonate is too low, the body needs more to balance body acid. Once it is known that the bicarbonate is low, the cause must be found. There are blood tests that help separate the rare causes from the more common ones. If the kidneys are the cause, then your doctor consults a pediatric nephrologist.