Indent Line Pregnancy Test: What It Looks Like (and Why It's So Misleading)
Indent lines can look like faint positives, especially in certain lighting. Learn the tells.
What people mean by 'indent line'
Many tests have a slight groove where the test line would appear. Under some lighting, that groove can look like a faint line—even when no dye has developed.
The key difference: dye and timing
If a line has clear dye color and appears in the read window, it's more consistent with a true test line. If it's colorless/gray and only visible at an angle, treat it as uncertain.
Why photos help
Photos capture what your eyes may miss—or invent. Take one photo at the correct read time, then apply the same enhancement method each time for fair comparisons.
Best next step
Retest with a fresh strip and follow the instructions carefully. If you keep getting unclear results, confirm with a clinician.
How to position the app
Your app is ideal here: it can reduce 'angle bias' by enhancing contrast consistently, and it stores the photo so users don't rely on memory.
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