If the urinary anion gap is positive or a small negative value in the setting of an acidosis, the kidney is not appropriately producing NH4+, indicating that the kidney is contributing to the acidosis.
如果酸中毒时,尿液阳离子间隙是正值或负值很小,那么肾脏就不能正常产生NH4+,表明肾脏参与了酸中毒的产生。