AI That Explains My Blood Test PDF for Free
Free AI blood test PDF explanation on HealthOS: upload a lab PDF, photo, screenshot or type values. The live site explains 88 biomarkers with age and sex matched ranges, free, no account.
Free AI Blood Test PDF Explanation
Yes. HealthOS offers a free AI blood test PDF explanation on the live site. Upload a lab PDF, photo, screenshot or typed values. The tool explains 88 biomarkers with age- and sex-matched ranges. It is free, needs no account, and uses AI processing. The report is sent to Anthropic's Claude AI, or if unavailable Google's Gemini or OpenAI, to read the numbers, then discarded. It is not stored unless you tick the optional keep-a-copy box, and an optional kept copy is deleted after 12 months. The result is information only and not medical advice.
What the tool does with your report
You do not need to know which tubes were drawn. Upload the PDF and the reader pulls out each supported marker, matches it to a reference engine, and returns a plain-language explanation. Nothing is stored unless you opt in. The optional assistant can answer a specific follow-up like "why is my ALP high when my ALT is normal", but the base result already explains what each marker is, what raises it, what lowers it, and what moves it.
A marker worth understanding: eGFR
eGFR is estimated glomerular filtration rate. It estimates how many millilitres of plasma the kidneys clear per minute, corrected to 1.73 square metres of body surface area. The common CKD-EPI 2021 equation uses creatinine, age and sex, with no race correction. Creatinine comes from muscle breakdown, so more muscle means more creatinine at the same true kidney function. Age and sex adjust for some of that.
| eGFR (mL/min/1.73 m²) | Band | What it means |
|---|---|---|
| 90 or above | G1 | Normal or high filtration if no other kidney damage signs |
| 60 to 89 | G2 | Mildly reduced; often expected with age |
| 45 to 59 | G3a | Mild to moderate reduction; may be CKD if persistent and other findings support it |
| 30 to 44 | G3b | Moderate reduction; active management usually needed |
| 15 to 29 | G4 | Severely reduced; specialist care usually needed |
| Below 15 | G5 | Kidney failure range |
Scroll the table sideways for the rest →
Typical eGFR bands used on many lab reports. Lab reference ranges can differ.
A low eGFR means less plasma is cleared per minute. A high eGFR can be normal in young adults or during pregnancy, but persistent unusual results should be discussed with a clinician. A single eGFR result is not a diagnosis. Clinicians interpret persistent changes with albuminuria, urine tests, imaging or other clinical context.
What moves eGFR up and down
Creatinine is not a perfect marker. Anything that changes creatinine release or creatinine clearance without changing true glomerular filtration will move eGFR.
- Very high fluid intake can lower creatinine modestly.
- A heavy meat meal or creatine supplement can raise creatinine for hours to a day.
- Intense exercise or muscle damage can raise creatinine.
- Trimethoprim or cimetidine can block creatinine secretion in the kidney tubules and raise serum creatinine without damaging the kidney.
- Low muscle mass, frailty or significant weight loss can lower creatinine and make eGFR look better than it is.
This is why one abnormal eGFR is not a diagnosis. The number becomes useful when you look at the trend and the context.
When to take an eGFR number to a doctor
Take it sooner if the lab flags it, or if the number is below 60 and it is new for you.
- eGFR below 45 on a first check
- eGFR below 60 that stays low on a repeat test
- A noticeable or sustained fall from your previous results, or any change your clinician would want to review
- Foamy urine, dark or tea coloured urine, swelling around ankles or eyes
- Rising blood pressure with nausea or fatigue
Those need a clinician quickly, not a PDF reader. The reader is information, not medical advice.
The whole PDF, not a shortlist
The free reader covers 88 markers across metabolic, lipid, hormone, thyroid, kidney, liver, inflammation and vitamin panels. It does not skim the three abnormal flags and leave the rest. It explains the normal markers too. A result inside the standard range can still need context. For example, a ferritin value at the bottom of the reference range might be worth discussing with a clinician if you are also noticing thinning hair or a drop in running performance, but that is an illustration of why normal results still matter, not a diagnosis.
Some results only make sense as a ratio or formula. Free in-browser calculators are available for Mentzer index, Sehgal index, NLR, ANC, HOMA-IR, TG/HDL ratio, De Ritis ratio and eGFR. They take two or three numbers and return the band plus a plain-language meaning. Nothing typed leaves the browser.
The point is not to replace a doctor. It is to know enough about your own numbers that the next doctor conversation is a real one.
Put your own numbers through HealthOS at https://healthosx.com/blood. Upload the PDF, photo or screenshot, or type your values. The 88 supported markers are explained one by one, free, no account, matched to your age and sex.
Written by
HealthOS Research