Participants analyze samples for the purpose of body fluid identification. Samples ship in September.

Participants analyze samples for DNA. Known bloodstain standards are provided on cloth substrates. Samples ship first week in January. (STR/YSTR)

Participants analyze samples for DNA. Known bloodstain standards are provided on FTA™ Micro Cards. Samples ship first week in March. (STR/YSTR)

Participants analyze samples for DNA. Known bloodstain standards are provided on FTA™ Micro Cards. Samples ship third week in April. (STR/YSTR)

Participants analyze samples for DNA. Known bloodstain standards are provided on FTA™ Micro Cards. Samples ship first week in September. (STR/YSTR)

Participants analyze samples for DNA. Known bloodstain standards are provided on FTA™ Micro Cards. Samples ship third week in October. (STR/YSTR)

Participants analyze known saliva samples for DNA. Samples are provided on a choice of FTA™ Indicating Micro Cards, Bode Buccal® DNA Collectors, or Puritan® Cap-Shure® Swabs. Samples ship in July. (STR/YSTR)

Participants analyze samples from a mother, child, and two alleged fathers for DNA and report paternity conclusions and associated statistical results. Samples are provided on either FTA™ Micro Cards or swab substrates. Samples ship in February. (STR/YSTR)