| abstract |
Provided in the present invention is a production process of intravenous immunoglobulin, which comprises fractionation of healthy human plasma to obtain fraction I+II+III/II+III; then precipitating by means of octanoic acid and filtration to obtain a clear liquid; passing the clear liquid through the following chromatographies sequentially: anion chromatography A, anion chromatography B, and affinity chromatography C; performing ultra-filtration concentration or dilution to the flow-through and washing solution after chromatography and then formulating, next filtering by means of a nanofilter, incubating at a low pH, mixing after incubation, formulating and sterilizing to obtain an intravenous immunoglobulin. The production process provided by the present invention may obtain an IgG product having high yield and purity, and more importantly, the anti-A, anti-B index and ACA index of the obtained products are greatly reduced, which meets the requirements in "Chinese Pharmacopoeia", while the osmotic pressure molar concentration of the sample also meets the requirements. |