Guides & reference ranges
Blood test results, explained in plain English
Every guide breaks down one part of your report — what it measures, what counts as a normal range in the UK, what a high or low result can mean, and when to speak to your GP. Backed by NHS, NICE and Lab Tests Online UK.
Albumin/Globulin (A/G) ratio: what it means
The A/G ratio compares albumin with globulin — here is what a low or high result really points to, and why it is never read alone.
Kidney & liverALT, AST and liver function tests explained
ALT, AST, GGT, ALP and bilirubin made simple — plus the AST/ALT ratio and when a raised liver enzyme actually matters.
Hair, skin & fatigueBlood tests for hair loss: ferritin, thyroid and vitamin D
Diffuse shedding often traces back to low ferritin or a thyroid shift — here's the UK first-line blood panel and what each number means.
Kidney & liverCreatinine, eGFR and kidney function: high and low results
What creatinine, eGFR and urea really mean on a UK kidney panel — normal ranges, high vs low causes, and the CKD stages G1–G5.
Vitamins & nutrientsFerritin and iron studies: low ferritin, iron saturation and supplements
Low ferritin, low iron saturation or a normal-looking ferritin that still hides deficiency — here is how to read an iron panel.
Blood test basicsHow to read your blood test results (a plain-English guide)
The calm, 6-step way to read any blood test report — ranges, flags, patterns and context — without panicking over a single number.
Blood values & resultsPlatelet count: normal range and what high or low means
What a normal platelet count is, what high (thrombocytosis) and low (thrombocytopenia) results can mean, and when to speak to your GP.
Blood values & resultsRDW blood test: what red cell distribution width means
RDW measures how much your red cells vary in size — a quiet early clue to iron, B12 and folate problems when read with Hb and MCV.
Hormones & thyroidThyroid blood tests: TSH, Free T4 and Free T3 explained
What TSH, Free T4 and Free T3 measure, typical UK ranges, what high and low results mean, whether TSH fluctuates, and when a thyroid result is an emergency.
Inflammation & immunityWhite blood cell count: neutrophils, lymphocytes and what high or low means
What your white blood cell count (WBC) measures, what the differential of neutrophils, lymphocytes, monocytes, eosinophils and basophils tells you, and when a high or low result matters.
AI analysisAI blood test analysers compared (2026): which one to use?
An honest comparison of dedicated lab AI, general chatbots (ChatGPT, Gemini, Claude) and lab portals — strengths, limits and who each one suits.
AI analysisKantesti review & rating (2026)
We ran real blood reports through it end to end — what it does well, what it costs, its limits, and how it scored against ChatGPT, Gemini and Claude.