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SIM test is a test performed to test for sulfur reduction, Indole production and motility. Black color formed= positive for sulfur reduction Red color after adding Kovacs reag â¦ ent= positive for Indole production Microorgaism growth all over the tube= motile.
Direct Coomb's testing identifies the presence of antibody coating the cells. Save transfusion practices require identification of what is coating the cells and why. slide 1 of 4. Direct Coomb's Testing A direct Coombs test is commonly used to determine if antibodies have bound to red blood cells.