What effect does C3 and C4 supplementation have on human body?

C3 and C4 are important molecules in the complement system and play a role in complement activation.

Complement activation can produce MAC (membrane attack complex)

Participate in immunization and maintain environmental stability.

C3 and C4 are smaller than normal, which reduces immunity.

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In addition:

ASO determination is very valuable for the diagnosis of group A streptococcus infection. ASO began to increase 1 week after group A streptococcus infection, and reached the peak in 4 ~ 6 weeks, lasting for several months. ASO was significantly increased in rheumatic fever, acute glomerulonephritis, erythema nodosum, scarlet fever and acute tonsillitis. It is of great significance to detect the gradual increase of antibody titer for diagnosis, and the gradual decrease of antibody titer indicates the remission of the disease. A few patients with hepatitis, nephrotic syndrome, connective tissue disease, tuberculosis and multiple myeloma can also increase ASO. Because people are often exposed to group A streptococcus, normal people also have low titer antibodies, usually < < 333U. > 500 u, which is considered to have diagnostic value.