The chemistry of the blood of the normal new-born has been studied in only a few cases, largely because of the difficulty of obtaining blood in sufficient amounts for the analysis of more than one constituent. Howland and Marriot1 have shown that the values for calcium are essentially the same as those found in the adult. Pettibone and Schultz2 have made similar observations on nonprotein nitrogen. This research was the outgrowth of the study of the uric acid content of the blood of the new-born carried out by us in association with Kingsbury3 in our laboratories.
The purpose of the investigation was to determine, first, whether the other nitrogenous constituents were high at birth and then gradually decreased to the adult normal figure as is the case with uric acid, and, second, to study the sugar content.
The blood was collected from the superior longitudinal sinus of