Bloodhunter hd ??

[Bugle M In]

anybody ever tried using one of these flashlights to help find blood??
If so, has it worked or is it useless??
http://www.primos.com/products/lighting/bloodhunter-hd/

[Elkhound]

While I dont use one In my line of work I use a special instrument to check the health of the eye....... we use a special filter over the bulb because it illuminates blood much better than white light. So I would think this would work for following a blood trail in the field as well