🧪 Summary comparison chart of February 22 LC-MS/MS results (People's 545)
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Summary comparison chart of February 22 LC-MS/MS results (People's 545)

A summary bar chart of some or most February 22 LC-MS/MS results, omitting blanks and including K67 and K68 reference samples, Q206 sock evidence, Q204 gate evidence, and K65 dress material. Martz used it to illustrate the response difference between preserved and non-preserved blood.

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People's 545

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Harmon Letter to Roger Martz Concerning EDTA Testing — Defense 1263 / Defendants' 1223
A two-page letter dated February 16, 1995, from prosecutor Rockne Harmon to FBI Agent Roger Martz concerning EDTA testing of sock and back-gate samples and asking Martz to “refute the possibility” of planted blood. Identified as Defense 1263 in the criminal …
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Two LC-MS/MS chromatogram runs of Q206, the sock edge cutting: run 4088 (Defense 1259-A; Defendants' 1215) and run 4094 (Defense 1259-B; Defendants' 1216). The candidate rows describe the first as showing EDTA present and the second as a confirmatory positiv…
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K67/K68 — EDTA-Preserved Reference Blood Controls
K67 and K68, known EDTA-preserved reference blood samples from O.J. Simpson and Nicole Brown Simpson used as positive controls in Roger Martz's EDTA testing. Testimony described them as producing strong EDTA signals, including a large 160-ion abundance.
Fredric Rieders' EDTA Report on Gate and Sock Stains (People's 586)
Dr. Fredric Rieders' two-page report dated July 17, 1995, evaluating Agent Roger Martz's EDTA test results for the gate and sock stains. Introduced as People's 586, the report and its disclosure timing were disputed, and prosecutors used its documentation of…
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50 ppm EDTA standard chromatograms, February 22 — morning and afternoon runs (Defense 1262-A, 1262-B)
Chromatograms of a 50-parts-per-million EDTA standard run on February 22 at 9:32 AM (discovery page 4077; ion count 319,561; Defense 1262-A) and 1:48 PM (discovery page 4070; ion count 49,393; Defense 1262-B). They were compared during testimony to demonstra…
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🔬 Summary comparison chart of February 22 LC-MS/MS results (People's 545)
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