Laboratory Time and Resources
Time Required to Perform Laboratory Analysis
Step 2: Body Fluid Stain/Tissue Identification
The extent of this step varies from laboratory to laboratory. Some laboratories perform only preliminary tests, which are frequently less time-consuming, but are not definitive. In addition to preliminary testing, laboratories may perform confirmatory testing on stains that have a positive preliminary test result. Confirmatory tests are highly discriminating and allow the analyst to report the origin of the fluid/tissue with a high degree of scientific certainty. These tests typically require significantly more time to perform.