How this works
You paste the text of your private blood test result. The tool runs a parser over it — pure pattern matching, no AI — to identify each marker, its value, and its units. Then it looks each marker up against UK reference ranges and the plain-English explanations we've already written on our test guides.
Every word of the output is content we wrote. There's no language model making things up, no hallucinated reference ranges, no "context" being inferred. If the parser doesn't recognise a marker, it says so — and lists the lines it skipped, so you can see what was missed.
What this tool isn't
- Not a diagnosis. Even when a marker is flagged, that's not a diagnosis — it's a signal to talk to a GP.
- Not a replacement for your GP. If anything is flagged or you have symptoms, book an appointment.
- Not OCR. Paste text only. PDFs and photos aren't supported yet (we're working on it).
- Not chat. It's a structured read of your numbers, not a conversation.
Why a tool instead of just our guides?
Most people don't read a 12-marker FBC report top to bottom against a separate guide for each marker. They want to know: what's flagged? what should I do? what should I ask? This tool answers those three questions for the markers we cover, then deep-links you to the full guide if you want the longer version.
The honest limits
We cover 26 markers as of 2026-06-01. That's most of what you'll see on a typical UK private blood test panel — but not all of it. If you paste a full FBC with the five-part white cell differential, we'll recognise haemoglobin, white blood cells and platelets; we won't yet recognise the individual neutrophil / lymphocyte / monocyte counts. Every new test guide we publish extends what this tool can do.
Information, not medical advice. Blood test results need context only your GP has. Out-of-range results, especially red-flag ones (haemoglobin below 80 g/L, platelets below 50, etc.), need same-week medical attention. Read our full medical disclaimer.