On April 11, 2025, Oncocyte Corporation terminated its relationship with Marcum LLP as its independent auditor and engaged CBIZ CPAs effective April 16, 2025, after Marcum's attest business was acquired by CBIZ. Marcum's reports for the fiscal years 2023 and 2024 did not contain any adverse opinions, but the 2023 report noted substantial doubt about the company's ability to continue as a going concern.