📄 LAPD Validation Run No. 37 — Erin Riley, Sept. 21, 1993
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📄 Documentary in Lab Proficiency Quality Control

LAPD Validation Run No. 37 — Erin Riley, Sept. 21, 1993

Hybridization record and raw data from the LAPD September 21, 1993 mock vaginal swab validation study run no. 37, analyst Erin Riley confirmed by Collin Yamauchi; cited by Gerdes as the fourth of five LAPD typing errors.

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Cellmark 1988 CACLD Proficiency Test and Report
The 1988 California Association of Crime Laboratory Directors proficiency test administered to Cellmark (49 samples, 1 false positive attributed to inadvertent cross-contamination that Cellmark did not detect itself). Defense 1154 is the six-page CACLD repor…
Gerdes Chart — LAPD Run Contamination by Month
Chart showing the percentage of LAPD PCR runs with contamination by month from May 1993 through August 1994, used by Gerdes to document contamination patterns in the LAPD laboratory; Defense 1295.
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LAPD PCR Validation Training Record
LAPD PCR method validation training record stating that every validation sample either gave the expected typing result or no typing result, introduced as Defense 1181-A. Gerdes contradicted this claim by pointing to Yamauchi's actual hybridization records.
CACLD Blind Trial Proficiency Report (Defense 1183)
Nine-page California Association of Crime Laboratory Directors report on blind proficiency trial results, introduced and cross-referenced during testimony about LAPD and Cellmark testing practices.
Four Types of Proficiency Tests Diagram
Hand-drawn diagram created during Dr. Cotton's testimony categorizing proficiency tests into four types (open/blind, internal/external), introduced as Defense 1153.
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Chart summarizing the percentage of LAPD PCR strips showing contamination and/or artifacts by month from May 1993 through August 1994; Defense 1287.
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🔬 LAPD Validation Run No. 37 — Erin Riley, Sept. 21, 1993
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