For R&D use onlynot for drug household or other uses.

Ortho-iodohippurate is an analogue p-aminohippuric acid for the determination of effective renal plasma flow. Labelled OIH has a significantly higher clearance than other radiopharmaceutical yet developed and is eminently suitable for renography. It is eliminated mainly by tubular secretion. In patients with normally functioning kidneys 85% of the OIH may be found in the urine 30 minutes after intravenous injection.