A visual depiction of cancer cells attached to tissue. Source: Adobe Stock
The Market Online - At The Bell

Join our daily newsletter At The Bell to receive exclusive market insights

Nine moths after listing on the ASX, Cleo Diagnostics (ASX:COV) has made its first major biotech breakthrough.

The company – developing a blood test to detect ovarian cancer as opposed to relying on ultrasound – has declared its blood tests detected 90% of early-stage cancers in participating patients.

“[The test] significantly outperforms current clinical workflows that use CA125 and ultrasound to predict malignancy,” the company wrote on Wednesday.

CA125 refers to an existing type of blood test that looks for a protein of the same name with “CA” standing for “cancer antigen.”

In mid-March, the company posted partial evidence showing that its product correctly caught cancers in the participating donors of blood whose diagnoses were missed in a CA125 test.

The company also reported on Wednesday that CLEO’s own blood test methodology (and product) has now shown superior performance to “all current routine clinical tools,” which in its view, is evidence of “significant global potential.”

Despite these positive results, the company’s share price was unmoved in the first twenty minutes of trade and remained at 17cps.

“Having demonstrated now that the CLEO ovarian cancer blood test is far superior to CA125 and ultrasound in our initial pre-surgical triage market, we open up new dialogue with physicians to consider the potential material benefits that CLEO brings for their patients,” CLEO CEO Richard Allman said.

“More broadly, these encouraging results on early-stage cancer detection provide impetus for us to progress the development of CLEO’s screening test for ovarian cancer.”

So far, all clinical evidence has been posted in peer-reviewed journals, which the company describes as a strategy to acquire “gold standard” clinical data.

COV last traded at 17cps.

COV by the numbers
More From The Market Online
US and VNZ flag

Week 2 CY26, wrapped: Geopolitics here to stay & there’s money in gold detectors

What does it say about the larger world when the United States government effectively kidnaps the President of Venezuela, and, while bodacious, it’s
The Market Online Video

HotCopper Highlights for Week 2 of 2026: 4D Medical, Pilbara Minerals, SILEX & more

Greetings and welcome to HotCopper Highlights for the end of Week 2 of 2026, I’m Jon Davidson.
A HotCopper-branded graphic image which reads "The HotList Top 10: This week's most watchlisted ASX stocks" in front of an ASX chart image faded in the background.

HotList stocks: Manuka, 4DX, Adalta, and other trending companies in Week 2

Manuka Resources topped the HotCopper HotList through Week 2, though health tech developers Adalta and 4DX…
Metal detector

They say you should sell shovels in a gold rush. Codan’s got a smarter idea

Codan has notched gains just south of +20% on Friday, coming out of the blue as…