OBA_2040843 (level of glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase 1 in blood serum) is the amount of a glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase 1 when measured in blood serum. Also known as: blood serum glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase 1 amount.