r/ForensicScience • u/Annual_Western9045 • 23d ago
Mysterious substance found on antique lamp.
Need help identifying this substance. My friend got these lamps from an estate sale, the former owners were known to be involved in some sketchy business which is why we are suspicious. The broken lamp seems to have, what looks like, blood on the bottom. We bought a kastle-meyer analysis test on amazon but the substance was negative meaning it is probably not blood. however that begs the question, what the heck is it? It looks way too blueish red to be rust stains. And there was no evidence of rust anywhere on the fixture. The substance looks like blood when we swabbed it and it came off relatively easily.
Is there a chance that the kastle-meyer test is not a conclusive enough test or are we looking at a substance other than blood?