I have used these cards quite a bit. They come with a small vial of extraction buffer and a small disposable pipet. You can moisten a sterile swab in the buffer and roll the swab over the dried stain. Pop the swab back in the vial for a few minutes and then using the pipe transfer a few drops of the extract in the vial to the card. Alternatively, cut a small square from the stain and place it in the vial with the extraction buffer.
Nov 04, 2008 Rating
Blood collection by: Margie F
Hi, I believe you have to collect the blood with a sterile swab moistened with sterile water.
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