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Steven Avery & Brendan Dassey— Case Archive
evidenceevidencedocumentSteven AveryFBI EDTA testing protocolArvizu described the FBI EDTA protocol as a qualitative method and said its stated instrument detection limit did not establish the detection limit for a dried bloodstain. She testified that a positive result reasonably indicated EDTA's presence, while a non-detection near the limit could not establish its absence.
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FBI EDTA testing protocol

Arvizu described the FBI EDTA protocol as a qualitative method and said its stated instrument detection limit did not establish the detection limit for a dried bloodstain. She testified that a positive result reasonably indicated EDTA's presence, while a non-detection near the limit could not establish its absence.

2 proceedings2 mentions1 trial

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Arvizu used the protocol's detection limits to distinguish a finding that EDTA was present from an inference that it was absent after non-detection near the limit.

Trial Record (2)