RSID-Blood
Definition
Rapid Stain Identification of Blood, a lateral-flow strip from Independent Forensics that also targets human haemoglobin. Functionally equivalent to HemaTrace in principle; each laboratory validates its chosen device independently for local sensitivity thresholds and cross-reactivity limits.
- Full name
- Rapid Stain Identification of Blood
- Manufacturer
- Independent Forensics
- Format
- Lateral-flow immunochromatographic strip
- Target
- Human haemoglobin
- Comparable product
- HemaTrace
Common questions
How does RSID-Blood differ from HemaTrace in practice?+
Both are lateral-flow strips targeting human haemoglobin and are functionally equivalent in principle, but they come from different manufacturers with distinct antibody formulations, so a laboratory validates sensitivity and cross-reactivity for whichever device it adopts rather than assuming the two perform identically.
Why does each lab validate the device independently?+
Sensitivity thresholds and cross-reactivity with non-human blood or degraded samples can vary by lot and by laboratory conditions, so internal validation establishes the limits the examiner can rely on when interpreting a result in casework, rather than trusting the manufacturer's published specifications alone.
Does a positive RSID-Blood result confirm the blood is from the suspect?+
No. It confirms the presence of human blood as a body fluid, not the identity of the donor. Source attribution requires separate DNA profiling of the same stain.
Related terms
- Cross-Reactivity
- The capacity of an antibody raised against one analyte to bind structurally related compounds. In RIA, cross-reactivity is the main driver of...
- HemaTrace ABAcard
- A lateral-flow device from Abacus Diagnostics that uses an anti-human haemoglobin monoclonal antibody. It is the most widely validated immunological blood confirmatory...
- Lateral-Flow Immunochromatographic Assay
- A rapid, single-use immunoassay format in which sample extract migrates along a nitrocellulose membrane past a detection zone loaded with antigen-specific antibody...
- Monoclonal Antibody
- An antibody produced from a single B-cell clone, recognising a single specific epitope. In forensic species identification, monoclonal antibodies offer higher specificity...
- Prozone (Hook) Effect
- A false-negative agglutination result caused by antibody excess. When antibody molecules outnumber antigen sites, each site is occupied by a single antibody...