tense Criminalist Gregory Matheson's testimony dominated the day, with repeated redirect and recross on blood-vial accounting, EDTA, degradation literature, and lab access records. Goldberg challenged the defense chart with Matheson's approximations and overnight replication, while Blasier elicited a conditional 1.5mL calculation. Ito sustained multiple EDTA objections and told jurors to disregard the last series of EDTA questions and answers. The literature testimony was mixed: Matheson agreed one Yeshion description fit Blasier's account but later maintained the cited articles did not undermine his analysis. Separately, Scheck alleged intentional withholding of a SID document; Lewis disputed the claim, and Ito deferred a ruling pending transcript review.
- Matheson described an overnight replication of five blood transactions that left approximately 0.4–0.5mL unaccounted for, supporting Goldberg's challenge to the defense's blood-vial chart.
- Judge Ito sustained multiple objections to EDTA questions and instructed the jury to disregard the last series of EDTA questions and answers; Goldberg continued EDTA questioning afterward.
- Matheson agreed that the Yeshion article described a degradation path consistent with Blasier's account, while later maintaining that the Yeshion and Grunbaum articles did not undermine his BA-to-B analysis.
- Using an eight-milliliter starting volume and other stated assumptions, Blasier elicited a calculation of approximately 1.5mL not present as of June 20.
- Blasier examined limitations in the lab's card-access printouts and posed conditional hypotheticals about access.
- Barry Scheck alleged that the prosecution intentionally withheld the original SID document during Dennis Fung's cross-examination.
- Judge Ito questioned Goldberg's basis for a lower blood-volume hypothetical; after Goldberg cited Peratis's later estimate and Blasier raised the sworn preliminary-hearing testimony, Ito overruled the objection and allowed the hypothetical.