Selective screening for distal renal tubular acidosis in recurrent kidney stone formers: initial experience and comparison of the simultaneous furosemide and fludrocortisone test with the short ammonium chloride test
Conclusions
The F+F test is characterized by an excellent sensitivity and negative predictive value, and the diagnosis of incomplete dRTA can be excluded reliably in a patient who acidifies their urine normally with this test. However, its lack of specificity is a drawback, and if there is any doubt, an abnormal F+F test may need to be confirmed by a follow-up NH4Cl test. Ideally, a prospective blinded study in unselected KSFs is needed to accurately assess the reliability of the F+F test in diagnosing, rather than excluding, dRTA.
Source: Nephrology Dialysis Transplantation - Category: Urology & Nephrology Authors: Shavit, L., Chen, L., Ahmed, F., Ferraro, P. M., Moochhala, S., Walsh, S. B., Unwin, R. Tags: Chronic Kidney Disease Source Type: research
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