Complement 4 (C4) Level, Serum TOPICO RESISTANT MELASMA – Breakthrough Intermittent Skincare RegimenRESISTANT MELASMA Additional tests such as HBsAg

Additional tests such as HBsAg

Gently massage into face

Supported by 12+ international clinical publications and trials

Requires a random urine sample collected in the provided sterile container

or runny nose

Complement 4 (C4) Level, Serum TOPICO RESISTANT MELASMA – Breakthrough Intermittent Skincare RegimenRESISTANT MELASMA Additional tests such as HBsAgComplement 4 (C4) Level, Serum Complement 4 (C4) Level Test The Complement 4 (C4) Level, Serum test measures the amount of Complement C4 protein in the blood. C4 is part of the complement system, a group of proteins that support the immune system in fighting infections, clearing damaged cells, and regulating inflammation. This test is commonly used to evaluate autoimmune disorders, inflammatory conditions, and immune system activity. Why is this test