ForensicSpot10 modules
Forensic Immunology
The immunological science behind forensic testing: antigens and antibodies, blood groups, immunoassays, species identification, and relationship testing.
- 60hours
- 30topics
- 10modules
Module 16 hrs3 topics
Foundations of Immunology for Forensics
Why immunology matters in forensic science and where it is applied.
Start module- The Role of Immunology in Forensic ScienceHow immunological principles apply across forensic disciplines, from body fluid identification to species testing and relationship analysis.13 min
- History of Forensic Serology and Immunological MethodsFrom Karl Landsteiner's discovery of blood groups to ELISA and lateral-flow devices, this topic traces immunology's adoption into forensic practice worldwide.13 min
- Scope of Forensic Immunology: Specimens and ContextsBloodstains, semen, saliva, and animal tissue in forensic immunology, and how sample condition and chain of custody set it apart from clinical immunology.13 min
Module 26 hrs3 topics
Antigens, Antibodies and the Immune Response
The molecules and mechanisms behind every immunological test.
Start module- Antigens: Structure, Types, and Forensic RelevanceWhat antigens are, which classes matter to forensic testing, and why antigen stability in dried or aged samples matters for casework.13 min
- Antibody Structure, Classes, and SpecificityThe molecular architecture of immunoglobulins and antibody classes, and why monoclonal reagents have largely replaced antisera in forensic kits.13 min
- Humoral and Cellular Immune Response MechanismsPrimary and secondary immune responses and how the body produces antibodies, underpinning immunoassay design and controlled-immunisation reagent production.13 min
Module 36 hrs3 topics
Blood Group Systems
ABO, Rh and other systems, their genetics, and their forensic use.
Start module- The ABO Blood Group System: Genetics and SerologyThe genetics and serology of the ABO blood group system, and its forensic significance in bloodstain, saliva, and semen evidence.13 min
- The Rh Blood Group System in Forensic ContextThe Rh system's D antigen and CDE nomenclature, its forensic and paternity-testing use, and the limits of Rh phenotyping from degraded evidence.13 min
- Minor Blood Group Systems: MNS, Kell, Duffy, and OthersMNS, Kell, Kidd, and Duffy: the minor blood group systems whose combined use increased the discriminating power of pre-DNA forensic serology.13 min
Module 46 hrs3 topics
Antigen-Antibody Reactions
Precipitation, agglutination and the reactions that underlie forensic tests.
Start module- Precipitation Reactions: Principles and ApplicationsHow antigen-antibody complexes form visible precipitate lattices, and the forensic uses of ring precipitation, Ouchterlony diffusion, and immunoelectrophoresis.13 min
- Agglutination Reactions: Direct and Indirect MethodsDirect and indirect agglutination, including latex agglutination and the Coombs test, and how titres detect and quantify antigens or antibodies.13 min
- Complement Fixation and Mixed Antigen-Antibody ReactionsComplement fixation as a classic serological technique, and the prozone, postzone, and cross-reaction pitfalls that can produce false results.13 min
Module 56 hrs3 topics
Immunoassays
ELISA, RIA, lateral-flow and immunochromatographic assays in forensic testing.
Start module- ELISA: Principles, Formats, and Forensic ApplicationsELISA's direct, indirect, sandwich, and competitive formats, and its adoption for body fluid identification, drug detection, and species testing.13 min
- Radioimmunoassay: Principles, Uses, and DeclineRadioimmunoassay's competitive binding at very low concentrations, its historical toxicology role, and why non-radioactive assays have largely replaced it.13 min
- Lateral-Flow and Immunochromatographic Assays in Forensic TestingLateral-flow strips like the ABAcard HemaTrace and RSID series confirm body fluids visually, with confirmatory testing required for faint or weak lines.13 min
Module 66 hrs3 topics
Species Identification
Precipitin and immunological methods to identify the species origin of a sample.
Start module- The Precipitin Test for Species IdentificationThe precipitin test determines a sample's animal species origin, applied in wildlife crime, meat fraud, and human-versus-animal bloodstain questions.13 min
- Antisera Production, Standardisation, and Cross-ReactivityHow species-specific antisera are raised and absorbed to remove cross-reactivity, and how phylogenetic overlap between species is managed in casework.13 min
- Modern Immunological and Molecular Approaches to Species IdentificationELISA, immunochromatographic strips, and monoclonal panels have largely replaced classical precipitin tests, now complemented by DNA barcoding.13 min
Module 76 hrs3 topics
Immunological Body Fluid Identification
Immunological confirmatory tests for blood, semen, saliva and other fluids.
Start module- Immunological Confirmatory Tests for Human BloodHemaTrace and RSID-Blood lateral-flow tests confirm human blood immunologically, distinct from presumptive colour tests, with validated sensitivity data.13 min
- Immunological Identification of Semen and SalivaPSA (p30) assays confirm semen and amylase-targeting RSID-Saliva confirms saliva, interpreted carefully in mixed-fluid or azoospermic cases.13 min
- Immunological Identification of Vaginal Secretions, Urine, and Other FluidsImmunological assays for vaginal secretions, urine, menstrual blood, and sweat vary widely in validation maturity across fluid types.13 min
Module 86 hrs3 topics
Immunology in Relationship Testing
Serological markers in paternity and kinship before and alongside DNA.
Start module- Blood Group Typing in Paternity and Kinship TestingABO, Rh, and other blood group systems excluded putative fathers in pre-DNA casework, though only by exclusion, never definitive inclusion.13 min
- The HLA System and Its Role in Forensic Relationship TestingThe highly polymorphic HLA system moved from serological typing to PCR-based methods, increasing discriminating power in paternity and kinship cases.13 min
- Statistical Interpretation of Serological Relationship EvidenceExclusion probability, paternity index, and combined paternity index calculations were how serological relationship evidence reached courts before DNA.13 min
Module 96 hrs3 topics
Forensic Applications and Casework
How immunological methods are deployed in real investigations.
Start module- Immunological Methods in Sexual Assault InvestigationsPSA detection, ABO typing, and body fluid confirmation assays triage sexual assault evidence before it feeds into subsequent DNA profiling.13 min
- Immunological Testing in Wildlife Crime and Food Fraud InvestigationsSpecies identification assays confirm whether a product or sample derives from a protected or misrepresented species in trafficking and food-fraud cases.13 min
- Immunological Drug Testing: Screening and Forensic InterpretationEMIT, CEDIA, and lateral-flow drug screens flag likely positives in toxicology and workplace testing, but every positive needs chromatographic confirmation.13 min
Module 106 hrs3 topics
Quality, Limitations and the Move to DNA
Sensitivity, specificity, controls, and why DNA superseded much serology.
Start module- Sensitivity, Specificity, and Quality Controls in Forensic ImmunoassaysSensitivity, specificity, sample degradation, and required positive and negative controls, validated under SWGMAT and ENFSI accreditation frameworks.13 min
- Sources of Error and False Results in Serological TestingInhibitors, degradation, hook effects, cross-reactivity, and operator error cause false results, mitigated by confirmatory testing and proficiency programmes.13 min
- The Transition from Serology to DNA Profiling in Forensic ScienceWhy DNA profiling superseded serology for individual identification, and the complementary role immunology still plays alongside DNA in modern casework.13 min