Is My Blood Test Report Stored When I Upload It for Analysis?
HealthOS sends your blood test report to Anthropic's Claude AI (or Google's Gemini or OpenAI if unavailable) to read the numbers, and asks the AI to discard the report after reading. HealthOS does not keep a stored copy unless you tick the optional keep-a-copy box.
The free HealthOS blood tool does not keep a stored copy of your blood test report when you upload it for analysis in the default path. According to the HealthOS blood tool live page, the report is sent to Anthropic's Claude AI (or Google's Gemini or OpenAI if unavailable) to read the numbers, then discarded. The third-party AI reader is asked to discard the report after reading; the file is not only processed in memory. A stored copy is kept only if you tick the optional keep-a-copy box, and that copy is deleted after 12 months.
Is my blood test report stored when I upload it for analysis?
No. The upload at /blood accepts a lab report PDF, a photo or screenshot of your results, or typed numbers. The file can be up to 15MB. The HealthOS live page states that the report is sent to Anthropic's Claude AI (or Google's Gemini or OpenAI if Claude is unavailable) to read the numbers, and the AI reader is asked to discard the report after reading. HealthOS does not keep a stored copy of the file. There is no account and no payment in either path.
This matters because the reading step needs the whole file to be processed. The AI reads the text and numbers, and the result screen turns the values into rows. If a lab report contains an inflammatory marker, a liver enzyme and a lipid panel, those values become rows in the result screen. HealthOS does not keep a stored copy of the file.
Earlier reports stay in your own browser
This is the part most people get wrong. The trend view is not a cloud library of your old PDFs. Up to 12 earlier reports stay in your own browser, so a new upload can show how each marker moved since the last one. The comparison works across labs and units. If you open the tool from another device, the earlier reports are not there. If you clear your browser's site data, the earlier reports are removed. In the default path, HealthOS does not keep a stored copy of the original files, so there is nothing to recover.
| Copy | Where it lives | How long |
|---|---|---|
| Read-only analysis | Not stored by HealthOS | AI reader asked to discard report after reading |
| Optional keep-a-copy | Tool servers, not linked to name or email | Deleted after 12 months |
| Earlier reports for trend view | Your own browser | Up to 12 reports, until you clear site data |
Scroll the table sideways for the rest →
The default is no stored report on HealthOS servers. Local trend history stays in your browser.
One tap carries the parsed numbers into the companion app. That app keeps every report and charts each marker over time. This is a separate opt-in path, not the default upload.
What the keep-a-copy box actually changes
If you tick the optional keep-a-copy box, HealthOS stores a copy of the report to improve how reports are read. The HealthOS live page says the copy is not linked to your name or email, and it is deleted after 12 months. The box is off by default.
- Off: no stored report, full analysis still works.
- On: a copy is kept for 12 months, not linked to name or email.
- You can leave it off and still see the trend view from local browser storage.
Ticking it does not change how the report is read. It changes what happens after the numbers are pulled.
A report you upload to analyse is read, not stored by HealthOS. It becomes a stored copy only if you tick the box, and only for 12 months.
What you see in your own numbers
Upload the PDF your lab gave you, or a photo of the printout. The tool covers 88 markers across metabolic, lipid, hormone, thyroid, kidney, liver, inflammation and vitamin panels. Each marker appears against ranges matched to your age and biological sex, not one generic range. On a second upload, the screen shows the old value, the new value and the movement for every marker the report contains. If your ALT was 41 U/L in January and 29 U/L in April, the trend view shows that drop, not two separate lab reports. The optional assistant can answer questions about your results. The tool is information, not medical advice. A result outside your range is worth asking a doctor about.
What changes on a second device
Because earlier reports live in the browser, a phone upload will not see a desktop upload unless you carry the numbers into the companion app. That is the one real limit. The default upload path leaves no stored report with HealthOS. The local trend history is a convenience, not a backup.
- Same browser: trend view works.
- Different browser or device: earlier reports are not visible.
- Companion app: keeps every report and charts markers over time.
To see it in your own numbers, open the free HealthOS blood tool at https://healthosx.com/blood and upload a lab report PDF or photo. A second upload shows how each marker moved.
Written by
HealthOS Research