What no photos of jacket or carpet stain before testing? Why not?
http://www.genetictechnologies.com/clect_civil.htm
Stains (Dry) - Blood, Semen or Saliva
For the best possible results, an item that has biological evidence deposited on it should be submitted in its entirety. Each item should be placed in a separate, clean paper bag, cardboard box or plastic bag (if entirely dry). If the item cannot be submitted in its entirety and a cutting cannot be taken, the following methods of collection may be used.
Place two or three drops of distilled water or physiological saline (0.85%) onto a sterile, cotton swab and rub over the stained area, transferring as much of the stained substance as possible onto the swab. Allow the swab(s) to air-dry and package in clean paper envelopes.
Dried samples may be scraped with a sterile scalpel or disinfected knife blade onto a clean square of paper or glassine paper. The scraping method of collection may result in a significant loss of sample, as the substance subjected to scraping will flake and disperse as very fine particulate matter. The paper should be folded on all edges in order to keep the scrapings from falling out. The folded paper should be placed inside a clean paper envelope and sealed.
Properly collected, stored, and shipped biological specimens for DNA analysis help assure robust results. Specimens in a dry state will offer ample genetic evidence for decades.