Full Blood Count (FBC)

The most fundamental blood test in medicine — a complete enumeration of your red blood cells, white blood cells, and platelets across 12 markers. Reveals anaemia, infection, immune status, clotting capacity, and blood cell abnormalities. Commonly used as a baseline health screen, pre-operative check, and the starting point for investigating fatigue, recurrent infections, or unexplained bruising. No fasting required.

The Full Blood Count is the foundation upon which all other blood testing builds. It examines three cell populations in precise detail. Red blood cell indices (haemoglobin, haematocrit, MCV, MCH, MCHC, RDW) reveal your blood's oxygen-carrying capacity and the size, shape, and consistency of your red cells. Low haemoglobin indicates anaemia — the most common blood disorder globally — while MCV (mean cell volume) distinguishes between iron deficiency (small cells), B12/folate deficiency (large cells), and chronic disease anaemia. White blood cell differential (total WBC, neutrophils, lymphocytes, monocytes, eosinophils, basophils) maps your immune system's current state. Elevated neutrophils suggest bacterial infection; raised lymphocytes indicate viral infection; elevated eosinophils point to allergy or parasitic infection. Abnormal patterns can also flag more serious conditions including autoimmune disorders and blood cancers. Platelet count and MPV (mean platelet volume) assess your clotting system — low platelets increase bleeding risk, while elevated counts can indicate inflammation, iron deficiency, or myeloproliferative disorders. This is ClearLabs' most straightforward test — no fasting, no preparation, results typically within 2-3 business days.