How to Spot a Doctored STI Test Screenshot

Someone sends you a screenshot of a negative test result. It looks real. The font matches, the logo is in the right place, the date lines up. But “looks real” and “is real” are not the same thing, and there is no way to tell the difference by squinting at a photo on your phone.

That is not a reason to assume the worst about anyone. Most people sharing a screenshot are telling the truth. The problem is structural, not personal: a photo of a document was never designed to prove anything. Anyone with a basic photo editor, a PDF form filler, or even a messaging app’s markup tool can change a date, a name, or a result in a few minutes.

The red flags worth noticing

If you are looking at a screenshot, a few things are worth a second look: a font that shifts partway through the document, margins or spacing that do not match the rest of the page, a crop that conveniently cuts off a header or footer, or a file name that does not match the lab or clinic it is supposed to be from. None of these prove anything either way. A genuine result can look slightly off because of how it was screenshotted, and a doctored one can look flawless. That is the real issue: visual inspection was never a reliable test.

Why “trust me” isn’t a system

In a 2026 survey of nearly 7,900 U.S. adults by Testing.com, 45% of people diagnosed with an STI said they had withheld their status from a sexual partner at least once, and 59% of that group also had unprotected sex without saying anything. Most of that is not malice. It is shame, timing, or the assumption that it will not matter. But it means that even well-intentioned self-reporting has a real gap between what people say and what is true.

A screenshot does not close that gap. It just adds a layer that feels more official without actually being verifiable. Asking someone to prove their status with a photo puts the burden on trust and editing software, not on an actual system.

Receipts, not promises

The fix is not asking better questions about a screenshot. It is removing the screenshot from the process entirely. Protecht does not have an upload button, because a result you can upload is a result you can edit. Instead, it connects directly to your healthcare provider through Apple Health and pulls your result straight from the source, read-only, with nothing for anyone to fake and nothing stored on Protecht’s servers beyond the coordination needed to make the share happen.

Sources

• 1 in 10 Americans Admit They Knowingly Gave a Partner an STD, Testing.com