Purity levels as GG are analyzed by SDS-Page or Agarose electrophoresis. These preparations are especially useful as a co-precipitant in RIA methods employing polyethylene glycol or ammonium sulfate precipitation steps, or as a protein stabilizer, or as blocker in a number of immunoassays. These preparations are also useful as GG control solutions for biochemical analytical tests. Gamma globulin preparations reconstitute to pH 7.2 ± 0.2.Usage : bioWORLD's products are supplied for LABORATORY RESEARCH USE ONLY. The product may not be used as a drug, agricultural or pesticidal product , food additive or as a household chemical.