Blood Test - What is C1? Posted on 16-Aug-2023 - Last updated: 16-Aug-2023 My doctor is doing a blood test. He is an allergist. Share this Article Featured questions What is Cinryze used for and how does it work? What is Haegarda used for and how does it work? How is Berinert administered? How does Berinert work for Hereditary Angioedema (HAE)? What is Ruconest used for and how does it work? Can these drugs be used in Thalassemia patients? How does Lupron (leuprolide) work for prostate cancer? What is the consideration to use nifidepine over amlodipine? Hypertrophic cardiomyopathy/mechanical heart valve? I have been on 400mg of tramadol a day for 20 years, decided its time to come off them Cetirizine - can cetirizine be taken for long periods of time? In the 1960 and 1970 what was used to treat server asthma? Related Drugs Poly-Vite+Iron Drops (Multivitamin with iron) Piasky (Crovalimab) Cerave Diabetics Dry Skin Moisturizing Relief (Topical emollients) Cerave Baby Moisturising (Topical emollients) Cerave Baby Healing (Petrolatum topical) Centrum Silver Women 50+ (Multivitamins and minerals) Centrum Minis Women (Multivitamins and minerals) Capvaxive Pf Prefilled Syringe (Pneumococcal 21-valent conjugate vaccine) Soluvita (Multivitamins with fluoride) Tyenne Prefilled Syringe Tyenne Autoinjector Tyenne (Tocilizumab) Tarlatamab Talzenna Liquid-Filled (Talazoparib) Norgestrel