Forensic Serology: Foundations of Blood Grouping, Identification Tests and Pattern Analysis
Questions
30
Duration
15 min
Faculty-reviewed
0
Updated
05 May 2026
Questions
30
Duration
15 min
Faculty-reviewed
0
Updated
05 May 2026
This mock covers the two foundational pillars of biological crime-scene evidence that every forensic science student must master before approaching casework-level analysis: forensic serology and bloodstain pattern analysis (BPA). Thirty easy-level questions build from core definitions to laboratory methods and scene interpretation — the layer that NFSU written papers, FACT Forensic Biology, and UGC-NET Life Science all test before any advanced technique.
The serology section covers the ABO system (antigen–antibody composition of each group, codominance of IA and IB, the universal-donor and universal-recipient concepts, forward and reverse typing), the Rh system (D antigen, haemolytic disease of the newborn, anti-D prophylaxis and RhoGAM), the MNS blood group system, and secretor status (the FUT2 gene on chromosome 19 and why ABO typing is possible from saliva, semen, and vaginal secretions in 80% of the population). The identification pipeline then runs from presumptive to confirmatory to species: Kastle-Meyer phenolphthalein test, Luminol chemiluminescence, the presumptive-vs-confirmatory distinction, Teichmann haemin-crystal test, Takayama haemochromogen-crystal test, spectrophotometric oxyhaemoglobin Q-bands at 542 nm and 577 nm, Ouchterlony precipitin test, ELISA, and the HemaTrace and Hexagon OBTI lateral-flow strips. A closing question covers bloodstain ageing — and why no validated casework dating method currently exists.
The BPA section covers passive stain morphology, directionality (the pointed-end rule), area of origin (stringing method and sin θ = W/L), transfer patterns (wipe vs swipe), projected patterns (cast-off and arterial spurting), impact spatter, satellite stains, and void patterns.
Pitched at first-year MSc Forensic Science students at NFSU and LNJN-NICFS, FACT Forensic Biology aspirants, and UGC-NET candidates building their serology foundation.
Themes covered:
Each question carries a detailed explanation citing Gaensslen's Sourcebook in Forensic Serology (1983), James, Kish and Sutton's Principles of Bloodstain Pattern Analysis (2005), and peer-reviewed journal sources. Allow 15 minutes.
Questions are written and edited by the ForensicSpot team and cited from peer-reviewed forensic textbooks, official syllabi and primary case law. Each one is verified before publishing. Detailed explanations show after you submit, so the test stays a real test. See a mistake? Tell us.