Free tools
Tools
Small tools that each do one useful thing. They run in your browser, they don't need an account, and they show you the result before asking anything of you.
The line we won't cross
There is an obvious, popular product in this space: enter your bloodwork, get a colour-coded verdict and an "optimal range" that is tighter and more impressive than the one your laboratory uses. It converts extremely well. We're not building it.
Two reasons. The first is that there is no such thing as the reference range for a marker — intervals differ by laboratory, by analyser, by assay method, and often by age and sex, which is exactly why yours is printed next to your result. A range supplied by a website invites you to compare your number against an interval your lab never used, and then to act on the difference. So our tool ships no ranges at all. You type in the one from your report, and that is the only thing anything is measured against.
The second is that interpretation requires everything the page doesn't have: your history, your medications, your symptoms, and the rest of the panel read together. So the tool reports below, inside or above the range you gave it, and stops. It doesn't say normal, it doesn't say optimal, and it doesn't suggest anything.
What it does instead
The arithmetic your report leaves out, which turns out to be genuinely useful: unit conversion in both directions, non-HDL cholesterol, the triglyceride-to-HDL and total-to-HDL ratios, HOMA-IR when you have a fasting insulin, and an estimated LDL that refuses to calculate when triglycerides are too high for the equation to hold.
And the trend, which is the point. A single result carries the noise of one morning — what you ate, how you slept, ordinary assay variation. A direction across several draws survives that, and it is the one thing no individual report can ever show you.
Two omissions worth naming
No eGFR. Estimating kidney function needs a validated equation with specific coefficients, and getting one slightly wrong means handing somebody a wrong number about their kidneys. Your report already calculates it properly.
No share button. Every other tool we've built has one. Blood results are about as personal as data gets, and a one-click path from your device to a public timeline isn't a growth tactic we want. Print or export your own copy; what happens next is your decision, not one we've engineered.
Educational content, not medical advice. Nothing here diagnoses or treats anything, and no result on this site is a reason to change or stop a medication.