Bloody receipt

[Harres]

I am working a Homicide case which includes a receipt that has been soaked in blood (now dry). There is no visible ridge detail. I have been asked to process this item for fingerprints. My thought is Ninhydrin will turn the entire item purple, can't use Physical Developer because it is a thermal receipt. Any suggestions...

[KaseyWertheim]

Could you clarify what you mean by "soaked"? Obviously if the receipt was completely covered in blood, there would be little use for latent print processing, unless a print was present in the blood.