Renalytix plc

("Renalytix" or the "Company")

Q3 Trading Update

20% quarter-on-quarter growth delivered

Achievement of key milestone of 1,000 billable tests processed in a quarter

LONDON and NEW YORK, 10 April 2025 - Renalytix plc (LSE: RENX) (OTCQB: RNLXY), a precision medicine company with lead testing service kidneyintelX.dkd, the only FDA-approved and Medicare reimbursed prognostic test to support early-stage risk assessment in chronic kidney disease, announces that Q3 trading has been in-line with expectations delivering 20% quarter-on-quarter revenue growth.

The Company has also reached the key milestone of processing over 1,000 billable tests within the quarter for the first time. The onboarding of a large New York-based primary care network in September 2024 and increasing performance with direct to physician sales efforts have supported the continued growth in testing revenues.

James McCullough, CEO of Renalytix, commented: "Billable testing volume paid by insurance companies, including Medicare, continues to grow and I am very pleased we have crossed the 1,000 billable testing mark. We remain on track to meet our full year expectations and expect to expand distribution of kidneyintelX.dkd with initiatives from both new insurance payors, care networks and hospital systems this year."

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About Renalytix (www.renalytix.com)

Renalytix (LSE: RENX) (OTCQB: RNLXY) is an artificial intelligence-enabled in vitro diagnostics company, focused on optimizing clinical management of kidney disease to drive improved patient outcomes. Renalytix has received FDA approval and Medicare reimbursement for kidneyintelX.dkd which is now offered commercially in the United States.

Unrecognized and uncontrolled kidney disease remains one of the largest barriers to controlling cost and suffering in the United States and the United Kingdom's medical system, affecting over 14 million and 8 million people, respectively. After five years of development and clinical validation, kidneyintelX.dkd is the only FDA-approved and Medicare reimbursed prognostic tool capable of understanding a patient's risk with kidney disease early where treatment has maximal effect. kidneyintelX.dkd is now being deployed across large physician group practices and health systems in select regions of the United States.

The over 15,000 patients that have been tested by kidneyintelX.dkd have produced a substantial body of real-world performance data. In patient populations where kidneyintelX.dkd has been deployed, a demonstrated and significant increase in diagnosis, prognosis, and treatment rates have been recorded. kidneyintelX.dkd now has full reimbursement established by Medicare, the largest insurance payer in the United States, at $950 per reportable result. kidneyintelX.dkd is also recommended for use in the international chronic kidney disease clinical guidelines (KDIGO).