Proteinuria is what is detected when we dip
your urine when you come to your GP perhaps for a medical or you go to an insurance company
and they look worried and tell you’ve got protein in your urine. What we need to do
then is quantify it and we can send off a urine sample to do that.
The reason you get protein in your urine, there are many causes, but fundamentally,
we all have protein in our blood. Things like albumin, and antibodies that we all make contribute
to protein in the blood and the kidneys filter huge amounts of blood every day but keep all
the protein in the blood, not in the urine. When the kidney is damaged for any reason,
if there’s inflammation, and there’s damage to what’s called the basement membrane which
is in the tiny capillaries in the glomeruli in the kidneys, then protein can leak out
when the blood is filtered, and that’s what you detect in a urine dip and are told you
have proteinuria. It indicates there’s a problem in the kidneys.
You might need a kidney biopsy to diagnose what that problem is and we’ll continue
to monitor the amount of protein and hope that it is reduced by our treatment whether
that’s controlling your blood pressure or your diabetes or treating another cause of
your kidney problems.