In renal physiology, net acid excretion (NAE) is the net amount of acid excreted in the urine per unit time. Its value depends on urine flow rate, urine acid concentration, and the concentration of bicarbonate in the urine (the loss of bicarbonate, a buffering agent, is physiologically equivalent to a gain in acid). NAE is commonly expressed in units of milliliters per minute (ml/min) and is given by the following equation:
where
Variable
Meaning
NAE
net acid excretion
V
volume of urine produced per unit time
UNH4
urine concentration of ammonium
UTA
urine concentration of titratable acid (e.g., phosphoric acid, sulfuric acid)
UHCO3
urine concentration of bicarbonate
and 30 Related for: Net acid excretion information
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