Tareq Abadl/LinkedIn
Sep 4, 2026, 18:22
Tareq Abadl: The Clinical Meaning of C3 and C4
Tareq Abadl, Medical Lab Specialist, shared a post on LinkedIn:
”Complement C3 vs C4 — Don’t Mix Them Up!
Confused about C3 vs C4 in Immunology?
Here’s the high-yield difference you need to remember:
- C3 is the major and central complement component.
- C4 is mainly associated with the Classical and Lectin pathways.
Clinical Pearl:
- Low C3 with normal C4 may suggest alternative pathway activation.
- Low C3 with low C4 may indicate classical pathway consumption.
ASCP / BOC Pearl:
- Don’t interpret complement levels alone.
- Always correlate C3, C4, and clinical findings.”

Stay updated with Hemostasis Today.
-
Oct 10, 2026, 00:34Raphaëlle Dodart: Discussing the Mechanisms of Menstrual Hemostasis
-
Oct 10, 2026, 00:26Barbara Adams Krolak: Discussing the Growing Need for Blood Clot Prevention in Asia
-
Oct 9, 2026, 23:59Ana Pedrero Gil: Is Coagulopathy with Fibrinolysis Present in All Obstetric Hemorrhages?
-
Oct 9, 2026, 23:57Exploring the Psychosocial Needs of People with Bleeding Disorders in Kyrgyzstan – EAHAD
-
Oct 9, 2026, 23:53Bernard Slater Jr.: Serving on the Advisory Council for the NBDF West Virginia Chapter
-
Oct 9, 2026, 23:53Aurelio Maggio: Thalassemia Reports Real-Time Impact Factor Rises to 1.760
-
Oct 9, 2026, 23:52Stronger Connections, Stronger Organizations – World Federation of Hemophilia
-
Oct 9, 2026, 23:46Samuel Misiani Mbunya: Advancing Sickle Cell Care Through Collaboration at the 21st ASCAT Conference
-
Oct 9, 2026, 23:42Hadeel Swed: My First First-Author Publication in Thrombosis Research