The fuck?

    • exasperation@lemm.ee
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      5 days ago

      Luminol is a chemical that reacts with hemoglobin to glow where very small amounts of blood might have been. That’s usually sprayed, for detecting much smaller concentrations than what would show up under a UV light. That might be what you’re thinking of.

    • pigup@lemmy.world
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      5 days ago

      I know from personal experience that splooge does not fluoresce under uv. Pee does however.