Your blood carries a running report on your health. Here we decode the everyday blood tests — from cholesterol and blood sugar to thyroid, iron and kidney markers — in plain English, so you know what each number really means.
Your bilirubin levels are a window onto your liver and your red blood cells. Bilirubin is a yellow-orange pigment made when old red blood cells are broken down — the same pigment that gives a healing bruise its yellow tinge. Normally your liver clears it efficiently, but when bilirubin builds up, it can turn your…
Your white blood cell count is your immune system’s headcount — a measure of the cells that defend you against infection. Made in your bone marrow, white blood cells patrol your blood and tissues, hunting down bacteria, viruses, and other invaders. A count that’s too high or too low can be an early clue that…
Your platelet count is one of the quiet workhorses of a routine blood test, yet it reflects something vital: your blood’s ability to stop bleeding. Platelets are tiny cell fragments that rush to any injury and clump together to seal it. Too few, and you may bruise or bleed easily; too many, and your blood…
Your uric acid levels are usually a quiet background number — until they climb high enough to crystallise and trigger the sudden, searing pain of gout. Uric acid is a normal waste product your body makes when it breaks down purines, and most of it is filtered out by your kidneys. This guide explains what…
Your CRP levels are one of the simplest windows into inflammation anywhere in your body. C-reactive protein (CRP) is made by your liver and rises within hours of an infection, injury, or flare of inflammation — which is why doctors order it so often. This guide explains what your CRP level means, the difference between…
A kidney function test is one of the most common checks on a routine blood panel, yet two of its key numbers — creatinine and eGFR — confuse almost everyone. The good news is they’re easier to understand than they look. Here’s what a kidney function test actually measures, what your results mean, and when…
High liver enzymes are one of the most common surprises on a routine blood test — and one of the most worrying-looking. The good news is that mildly raised levels are usually not an emergency, and the most frequent cause is very treatable. So what do high liver enzymes actually mean, what causes them, and…
A cholesterol test gives you four numbers — and most people have no idea which ones they want high and which they want low. (Yes, one type is actually good for you.) So what is a healthy cholesterol level, what do LDL, HDL, and triglycerides mean, and when should your numbers worry you? Let’s decode…
Ferritin is one of the most useful — and most overlooked — numbers on a blood test. It’s essentially your body’s iron savings account, and when it runs low, you can feel exhausted long before a standard blood count shows anything wrong. So what does low ferritin mean, what are the symptoms, and what counts…