For those of you who live in
the United States or Canada or Europe this will likely be a curiosity rather
than the big deal that it actually is. The
North American history of Proficiency Testing started in the 1960-1980s when
countries recognized the importance of externally monitoring the quality of medical
laboratory test results. We have in
place very sophisticated systems.
The reality was, and still is,
that in the vast majority of situations, laboratory test errors go undetected
and a wrong result is reported to a physician or patient with frightening frequency.
Even doing conventional quality control can’t control this. The reason they go undetected is because when
we go down, humans have enough internal mechanisms that we usually get better
on our own regardless of what caused the problem. Even if we have a diagnostic test that is ordered
and performed with the best of intentions but is of wrong value, and is
followed up with a medication that we don’t need, we usually have enough
internal resources to tolerate all sorts of wrong impressions and inappropriate
“medications” that we receive. There are
MANY people walking around with all sorts of missed or incorrect diagnoses.
But every once in a while, a
BAD thing happens, and a person either doesn’t get better, or gets worse and
sometimes dies. By then it is too late, and all hell is likely to break loose.
So, our predecessors figured
out that by requiring laboratories to test samples where they don’t know the
actual result, but an external body does, we may catch more of these errors. If the laboratory returns the correct
accurate result, we inform them they are “proficient” or “competent”. If they get it wrong, we don’t call them “incompetent”
but harsh words hurt, but we say they have “opportunities for improvement”.
The organizations that send
out these quality check samples to laboratories are known either as Proficiency
Testing bodies, or more frequently in most places around the world. External
Quality Assessment bodies (or EQA).
Now 30-50 years later, most
wealthy countries have developed their own EQA bodies, that focus primarily on
the quality concerns of their own countries.
Poorer countries have often struggled to get similar programs up on
their own, and end up buying samples from the wealthy countries, which in the
majority of situations has been a real failure approach.
The samples that are sent all
too often are inappropriate for the laboratories that receive them and importantly
they don’t survive the travel, unless they have been freeze dried for the convenience
of the sender (but not for the receiver!).
And more importantly, they were rarely designed with poor countries’
needs in mind. They are designed for the
complex sophisticated laboratories in the countries that created them.
We have struggled with this as
a challenge for near 20 years with some success, but also a lot of failure
(about 50:50). We would invite
countries to send staff to our EQA laboratory in Vancouver and would teach them
a series of simple to learn, easy to implement methods that we developed so
they could create their own stable samples at home.
The methods are usually bullet
proof even in climes with elevated temperature, but they depended up the
country having some infrastructure to make the program happen. And sometimes that infrastructure was not
there.
So in a new collaborative
program with another EQA provider, we are trying a new strategy. Rather than have people come to us, we are
going to them, working in their laboratories working with their staff, and
ensuring at some essential parts of the necessary infrastructure, like the
informatics system is in place. So the
samples can be made and be distributed in-country, and the information resulting
can be simply entered into a computer hooked up to a sophisticated data base and
the results can be sent to the key people.
Importantly, this way the
country picks the challenges that it wants to send, with the microbiological
test challenges it wants to use, rather than depending on samples from companies
with a different approach.
So, this week we just did our
first in-country training for in-country microbiology EQA in a county in West
Africa. The training program went even
better than we anticipated, and plans are being put in place for the infrastructure
and follow-up.
Guaranteed success? No… but so far things look really good and
promising. We will know a lot more in a
few months from now. But if it works the
country will have taken control of the quality of its own laboratories, will
have saved mountains of money by not buy samples from other countries, and will
have the quality challenges that it needs, not what it receives.
Fingers crossed.