Witness Testimony

Dr. David J. Speicher, a scientist specializing in viral diagnostics with experience directing COVID-19 PCR laboratories, testified regarding technical limitations of PCR testing during the pandemic. He explained that PCR is a highly sensitive molecular tool that detects viral RNA but cannot determine whether detected material is replication-competent or whether an individual is infectious. He stated that samples amplified above approximately 35 cycles are near the assay’s limit of detection and argued such results should not be considered true positives indicating active infection.
He testified that infectious viral loads correspond to lower cycle threshold values and that individuals are typically infectious within a narrow window around symptom onset. According to his evidence, asymptomatic transmission is rare and PCR-positive results can persist long after infectiousness has ended. He recommended that testing policy should have differentiated between infection and infectiousness and suggested that rapid antigen tests are more appropriate for identifying individuals with high viral loads who are actively infectious.
Dr. Speicher also criticized large-scale asymptomatic PCR testing, stating that it contributed to inflated case counts and significant public expenditure. He noted that laboratories receive minimal clinical information when processing samples and cannot determine symptom status from test results alone. He concluded that testing strategies should have focused on symptomatic individuals, employed clearer cycle threshold cut-offs, and improved communication between laboratories and clinicians to better inform public health decision-making.