Fig. 2.

Examples of student work with the Hematology & Serology take-home kit. (1) Backlit Petri dish with 1% (w/v) agar, starch, and Lugol’s iodine for saliva identification (haloes indicate positive results); (2) blood typing results that show agglutination with anti-D serum (students drew blood from their fingertips); (3) paper envelope where biological samples were enclosed, with chain of custody label; (4) SALIgAE test indicating presence of saliva by the change in coloring; (5) the sequence of five images illustrates the process students followed in analyzing of a cotton swab with a semen sample, starting with the photographic registration of the swab and its packaging, incubating the tip of the swab inside an Eppendorf tube with buffer solution, applying a drop of the supernatant to the sample well of the P30 test device.