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Dr Ahmed Kalebi, Kenyan Pathologist, Enters Hall of Fame: What His Work Says About Waiting for a Diagnosis

From a hospital laboratory in Garissa to the first Hall of Fame of The Pathologist, Dr Ahmed Kalebi's career follows one question worth watching: how quickly can a laboratory tell a patient what is wrong?

Updated on 7 min readAfricaKenya
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Dr. Ahmed Kalebi, Founder, Executive Chairman, CEO and Principal Pathologist of Dr Kalebi Labs (DKL) [Credit:DKL / HANDOUT]

A Kenyan pathologist has been named in a new international Hall of Fame, and the work behind the honour begins with a question that has little to do with awards: how long should a patient wait to learn what is wrong?

Dr Ahmed Kalebi's name was announced on 19 October 2026 in the first Hall of Fame of The Pathologist, an international publication covering pathology and laboratory medicine.

Pathologists work behind the scenes, in the laboratory where a sample of blood or tissue becomes the result that decides what happens next.

Kalebi now runs Dr Kalebi Labs in Nairobi, and what that work could mean for patients in Kenya is the story worth following.

How does a pathologist earn a place in a Hall of Fame?

The magazine announced the Hall of Fame in a piece by Helen Bristow, an author for The Pathologist .

She wrote that it gives permanent recognition to anyone named five or more times on the magazine's annual Power List, and also remembers colleagues who have died.

The Power List names influential people in pathology, chosen by a panel of judges.

Kalebi qualifies with six appearances.

The Star, a Kenyan daily newspaper, listed them as 2019, 2020, 2021, 2024, 2025 and 2026.

The announcement said he is celebrated for his ambition to advance laboratory technology where resources are limited.

Others named include Marilyn Bui, a director of the Digital Pathology Association, and Andrew Janowczyk, whose work focuses on trustworthy artificial intelligence in clinical laboratories.

David Wells led the laboratory response to COVID-19 for NHS England, the public health service in England. Christopher Fletcher, a tumour pathologist, died in 2024.

Richard Scolyer ,a renowned Australian melanoma pathologist who died on 7 June 2026 was also among the 15.

The Star also reported that Kalebi is the only African among the 15. The magazine's announcement does not make that comparison.

"Africa has exceptional talent in pathology, science and laboratory medicine," Kalebi said, according to The Star.

Where does the waiting happen? A look at Kisumu

One hospital in western Kenya shows what is at stake.

Jaramogi Oginga Odinga Teaching and Referral Hospital is in Kisumu city.

It is a main referral hospital for Kisumu and several neighbouring counties.

In 2025 the hospital ran a subsidised breast cancer programme with the Africa Cancer Foundation, Matibabu Foundation and Tiba Foundation.

Women had a needle biopsy within a day of making contact, 0.22 days on average, but the laboratory result then took 21.4 days on average, and only 8.65% of results met the programme's 10-day target.

In plain terms, the sample was taken quickly and the answer took about three weeks.

A follow-up laboratory test on the tissue, immunohistochemistry, took 11.3 days on average.

The women had waited long before reaching the hospital.

The typical delay before diagnosis was eight months, they had visited 3.79 hospitals or hospital visits on average, and three in four reported money as a barrier.

Seventeen of the 104 women with invasive breast cancer died during follow-up.

The abstract does not say whether the laboratory wait played a part.

Albert Ng'ong'a and colleagues reported these figures in an abstract for the Miami Breast Cancer Conference.

It covers one hospital in 2025, not Kenya as a whole, and it says nothing about Dr Kalebi Labs.

From Kibra to the microscope

The Nation, a Kenyan daily, reported that Kalebi grew up in Kibra, a low-income settlement in Nairobi, and attended Jamhuri High School.

Quoting The Pathologist's 2019 profile of him, it reported that he chose pathology over surgery after being asked to examine a tumour during a student elective in Durban, South Africa.

He studied medicine and trained in pathology at the University of Nairobi, then took a fellowship in anatomical pathology at the University of the Witwatersrand in Johannesburg, South Africa.

What did Garissa teach him?

Kalebi described the next step in his 2025 Power List entry. In 2005, newly qualified, he was posted as the first government pathologist to Garissa Provincial General Hospital, in north-eastern Kenya near the Somali border, and asked to build up its laboratory.

He wrote that blood counts and liver and kidney tests were unavailable, equipment was broken, reagents had run out and clinicians distrusted the laboratory.

He wrote that he rebuilt it within three months and that the hospital then qualified as an internship training site. Those details rest on his account alone.,

The Nation described his time there as brief.

The deeper problem, he wrote, was that no referral routes existed for specialised tests such as tissue examination, bone marrow evaluation and immunoassays, in either the public or private sector.

How did one idea grow into Dr Kalebi Labs?

He wrote that he trained further in South Africa from 2006 to 2009.

The Nation reported that he founded Lancet Kenya in 2009 as a subsidiary of Lancet Laboratories South Africa, and that it introduced specialised tests that previously had to be done abroad.

A referral laboratory tests samples sent by other hospitals.

In a 2014 Business Daily profile, he said Lancet charged rural health facilities heavily subsidised rates.

The Pathologist's 2021 entry credited him, as Lancet's founder and former chief executive, with making his private laboratory the first in East Africa to gain ISO 15189 accreditation for COVID-19 PCR testing.

ISO 15189 is an international standard for the quality and competence of medical laboratories.

The Star reported in 2021 that he had retired from Lancet that April.

Dr Kalebi Labs (DKL) opened in October 2024, according to The Standard, another Kenyan daily. It marked its second anniversary on 16 October 2026.

In a 2025 post on X, Kalebi said it sits in Upper Hill, a Nairobi district, less than 300 metres from the main gate of Kenyatta National Hospital, and takes walk-in patients and courier-delivered samples around the clock.

Kenyatta National Hospital is the country's biggest health facility.

What technology is behind it?

Kalebi's Power List entry lists total laboratory automation, fully digital pathology workflows, sequencing-based cancer gene testing, in-house flow cytometry and AI-powered laboratory software.

Capital FM, a Kenyan news outlet, described DKL as a paperless, digital-first laboratory.

At the launch, Kalebi said automation and robotics were meant to minimise human error and speed up clinical decisions.

Who can reach it?

In a 2025 post on X, DKL said it is an accredited partner of the Social Health Authority, with histopathology and cancer diagnostics covered at no extra cost to eligible members.

The Social Health Authority is the state agency that replaced the National Hospital Insurance Fund to manage public health insurance.

DKL also said it accepts private insurers, including AAR and Britam.

Kulan Post, a news site, reported that a delegation from Alliance Medical Centre, a Garissa hospital, toured DKL to explore collaboration. The report announced no agreement.

These statements come from DKL or its supporters and have not been independently confirmed.

What does the laboratory say it has achieved?

Kalebi wrote that DKL's technologies cut turnaround times for specialised tests from weeks to hours.

That is his own account.

One benchmark exists for comparison.

At a November 2025 launch of a BRCA testing initiative in Nairobi, John Waigwa, laboratory manager at Aga Khan University Hospital, said BRCA1 and BRCA2 testing in Kenya cost Sh48,000 in total, with results delivered in three to four weeks.

DKL's own price and turnaround for a comparable test would allow a direct comparison.

JosephMmwa.com asked Dr Kalebi and Dr Kalebi Labs for comment on the claims and figures in this article.

They had not responded by the time of publication.

What could it mean for patients?

A study of 2016 data counted 26,472 tissue and cell-sample interpretations in Kenya's public sector for all diseases, against an estimated 40,999 new cancer cases in 2012, and its authors described a significant deficit in capacity.

The data are old, and the two figures count different things.

The Kisumu programme shows a quick biopsy followed by a much longer laboratory wait.

The abstract does not say what caused it.

That is why a career spent on this problem, from a Garissa laboratory to a Nairobi referral laboratory, is worth following.

The honour recognises the career.

Whether waits have shortened for patients is the next chapter, and it depends on things outside the laboratory: whether samples from outside Nairobi can reach it, who pays, and how quickly results come back.

The Kisumu team measured its waiting times and published them.

Two years on, the matching figures for DKL are the ones to watch: how many samples, how fast, at what price, and from outside Nairobi.

Those numbers, alongside independent evidence of clinical value, would show what the honour means in a patient's life.

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Portrait of Joseph Mmwa, health journalistJoseph MmwaHealth & Medical Journalist

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