Tau.Neutrino said:
Spotted this article.
Using crime scene bloodstains to determine a person’s age
> Without blood, the detective’s life would be a lot harder. Since the average person carries around 4.7 to 5.5 liters (1.2 to 1.5 gal) of blood, it tends to get splashed around crime scenes a lot when violence is involved. Though distressing, it’s also a great help
LOL.
> Specifically, the team was looking for molecular subunits in two types of hemoglobin – fetal hemoglobin (HbF), which is found in newborns, and adult hemoglobin (HbA).
Nice, but does it work.
> So far, the team has been able to correctly place the adult and adolescent samples with an accuracy of 99 percent and the infants with 100 percent. One advantage was that the process is not only fast, but non-destructive. Also, no sample preparation was required.
It works.