What it does
Blood tests are usually done months apart, on separate reports. This tracker puts them in one place. Add each result with its date, the unit and the range printed on that report, and the tool draws a simple line for any test you pick. Each point carries its own printed range as a light bar, because different labs print different ranges.
It does not judge your numbers or add ranges, and nothing leaves your device. Use it to see your own results side by side, then take the printout to your doctor. Pull results out of a report with the lab report reader, and convert units first with the lab unit converter if two labs used different ones.
How to use it
- Add results with the form, paste rows, or open a CSV or Excel file. The reader’s tracker CSV works directly.
- Pick a test. If it was reported in more than one unit, pick the unit to draw; units are never mixed.
- Read the chart and the table under it. Delete a wrong row with the cross.
- Download the CSV of all results, or the report as an image, PDF or Word file.
What each option does
- Printed low / high: the range printed on that report, if any. Leave blank when none was printed.
- Dates like 03/04/2026 mean: tells the tool whether that is 3 April or March 4.
- Keep my results in this browser: off by default. When ticked, the rows you added are kept on this device only.
- Clear everything: removes all rows and any kept copy.
Worked example
Three tests on four dates, as a CSV with the columns date, test, value, unit, low, high, lab. After opening it, the picker lists Glucose, Haemoglobin and Potassium. Pick Haemoglobin and you see four dated points from 13.1 to 13.9 g/dL, each with its bar from 13.0 to 17.0. The PDF lists every test with its dates, values, ranges and labs.
FAQs
Does it say if a value is good or bad? No. Ask your doctor or pharmacist about your results.
Are my results stored? Only if you tick the keep box, and then only in this browser.
Why are some results missing from the chart? They use a different unit. Choose the unit above the chart.
Where the numbers come from
- Only the values and ranges you enter or import are used. Nothing is added by fibub. The chart and PDF are drawn in your browser.
Standard scientific values, such as constants, atomic weights and melting points, are facts found in every textbook; we name where ours were checked. If you are an author or publisher and want a value, a credit or a table changed or removed, tell us and we will act quickly.
Last updated 2026-11-10.