Observations on renal protein metabolism; renal venous amino nitrogen content before and following hemoglobin infusions in dogs.

No significant difference was demonstrated in the free and total alpha amino nitrogen content of arterial, renal venous, and inferior vena caval blood of normal anesthetized dogs during fasting and following the administration of 3 to 6 gm. of hemoglobin. These results do not provide evidence of renal protein reabsorption and metabolism in the dog under the conditions employed in this study.