Evidence: well sourced. Imported from the supplied 65-Case Master Edition, dated September 19, 2026. Source links and classifications are retained as an attributed case account; import is not an independent source review.
Case at a glance
- Case number
- 036
- Date / range
- 2012–2013
- Sector
- Integrity, provenance, and laboratory failure
- Genetic asset
- Transferred biological traces and a DNA profile
- Security principle
- Presence of DNA Is Not Proof of Presence
Event summary
Lukis Anderson's DNA appeared on a homicide victim even though hospital records placed him elsewhere. Investigators concluded that paramedics likely transferred his DNA after treating him and later responding to the victim, demonstrating the danger of secondary transfer.
Source: wired.com — Lukis Anderson And Secondary DNA Transfer source 1.
The case in context
Lukis Anderson's case concerns the route by which DNA can arrive at a location. The reported secondary-transfer explanation involved medical responders who had contact with him and later with the victim. Hospital records supplied important evidence against the inference that he had been present at the crime.
The distinction is between identifying a trace and explaining an activity. Those are not the same conclusion. Secondary transfer is one possible account that needs evidence about timing and contact; it should not become a universal explanation for every disputed result.
Acquisition and processing
medical contact → DNA on responder/equipment → later crime-scene contact → trace recovery → database match → false implication
The sequence of events
- medical contact
- DNA on responder/equipment
- later crime-scene contact
- trace recovery
- database match
- false implication
What became inferable or exposed
Transferred biological traces and a DNA profile
Lukis Anderson's DNA appeared on a homicide victim even though hospital records placed him elsewhere. Investigators concluded that paramedics likely transferred his DNA after treating him and later responding to the victim, demonstrating the danger of secondary transfer.
Affected parties and consent
- Direct parties
- Lukis Anderson and people in the homicide investigation
- Indirect parties
- Connected institutions, communities, or resource users; no affected-person total is assigned.
- Direct count
- Unknown / not assigned
- Indirect count
- Unknown / not assigned
- Consent status
- Permission to analyze material does not resolve whether the material, identity, or interpretation is correct. This case focuses on those evidentiary boundaries.
Security dimensions
Confidentiality
The confidentiality question concerns transferred biological traces and a dna profile. Exposure and further inference must be distinguished from the fact of collection or availability.
Integrity
The integrity question is whether the described material, permissions, processing, or interpretation can be relied upon. Presence of DNA Is Not Proof of Presence identifies the particular boundary examined here.
Availability
Access and continuity are assessed for the described event; potential effects are not presented as confirmed outages or losses.
Provenance
The relevant chain follows transferred biological traces and a dna profile through the stages shown below. Missing public detail is not proof that internal records did not exist.
Consent, persistence, and relational exposure
Consent
Permission to analyze material does not resolve whether the material, identity, or interpretation is correct. This case focuses on those evidentiary boundaries.
Persistence
Later reuse depends on the actual asset and links to other records; no future misuse is asserted.
Relational exposure
Connected institutions, communities, or resource users; no affected-person total is assigned.
Case-specific assessment
integrity of interpretation critical; provenance critical; confidentiality moderate; availability of hospital records exculpatory.
GeneticSecurity.org analysis
Genetic Exposure Radius
No single level is assigned where the supplied dossier gives a range, conditional outcome, or broad institutional consequence. The affected parties and proposed assessment are shown separately.
Confidence: not assigned. Classification: GeneticSecurity.org analysis.
Genetic Persistence Risk
Persistence depends on the specific biological material or information retained. A potential effect is not treated as an observed genomic disclosure.
Confidence: not assigned. Classification: GeneticSecurity.org analysis.
Genetic Provenance Integrity
A numeric provenance level is not inferred from the existence of a source or court record. It requires evidence of the relevant custody and processing controls.
Confidence: not assigned. Classification: GeneticSecurity.org analysis.
Proposed classification and its limits
Suggested GER: GER-0. Suggested GPR: GPR-2. Suggested GPI: GPI-1.
These are proposed classifications from the supplied case dossier. Conditional scores describe an assumed exposure; they are not evidence that it occurred. A single numeric value is left unassigned when the asset or outcome is not sufficiently bounded.
What this case does not prove
Secondary transfer does not explain every disputed trace. It is a hypothesis requiring timing, quantity, substrate, and activity-level evaluation.
Mitigations and lessons
- Activity-level propositions
- Transfer-aware collection protocols
- Responder/equipment logs
- Contextual corroboration
- Elimination testing with safeguards
- Mandatory review of hard alibis
Primary sources
No additional source listed. See the evidence notes for limitations.
Secondary sources
- SECONDARY SOURCE wired.com — Lukis Anderson And Secondary DNA Transfer source 1
Policy and standards
Genetic Security Policy and StandardsReview and correction history
Source edition: September 19, 2026. Imported case account; no substantive corrections recorded.
Correction policy and logCite this case
GS-CASE-036. Lukis Anderson: How Paramedics Carried DNA to a Murder Scene. GeneticSecurity.org. https://geneticsecurity.org/cases/036-lukis-anderson-secondary-dna-transfer/