Microbiology All of the following are false regarding classes if immunoglobulin except : A IgM has maximum half-life of 23 days B IgE has least serum concentration of 0.00004 mg/ml C IgG has maximum sedimentation co-efficient of 19 D IgD has a carbohydrate concentration of 8 % 💡 Explanation All of the following are false regarding classes if immunoglobulin except : ✓ Correct Answer: B. IgE has least serum concentration of 0.00004 mg/ml