Our house was recently broken in to and there is a smudge of a red substance on a dresser drawer...the police said it was too dark to be blood, but I am a nurse and I know what red blood looks like. How can I find out if it is blood without taking it to a lab? I thought about hydrogen peroxide but I wasn't sure.
2007-05-28 02:36:58 · 6 answers · asked by Ali H 1 in Science & Mathematics ➔ Medicine
How about litmus paper? pH of blood is 7.4.
2007-05-28 02:43:55 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Aside from taking the sample to the lab for analysis, there exists no way to determine its actual content with certainty. Note that blood is simply a protein-rich fluid whose red color is given by the hemoglobin, basically an oxide of iron. Regarding the claim made by the police that the stain was too dark to be blood, it is worthy to note that the color of the sample would be governed by its original oxygen content as well as the amount of time it has been exposed to air.
2007-05-28 09:49:47 · answer #2 · answered by riemannsurface2 1 · 1⤊ 1⤋
A drop of blood become a clot. You right, you can use hydrogen- the blood spot on dress up become blanch. At last you can use luminol fluid-blood spots in darkness are fluorescent.
2007-05-28 17:43:06 · answer #3 · answered by Ljiljana A 2 · 0⤊ 0⤋
Hydrogen peroxide decolorises hemoglobin and color becomes pale.
2007-05-28 10:09:36 · answer #4 · answered by J.SWAMY I ఇ జ స్వామి 7 · 0⤊ 0⤋
purchase an expensive electron mixroscope or if you want to save cash then you can buy the CSI..
2007-05-28 09:53:55 · answer #5 · answered by Anonymous · 0⤊ 0⤋
You can try tasting it. You should know what blood taste like.
2007-05-28 09:46:52 · answer #6 · answered by khinzir_pinky 1 · 0⤊ 1⤋