Kidney Function Checks

Blood testing for kidney function

kidney-function-testsThe kidneys serve several vital functions in the human body including maintaining the right amount of fluid and electrolytes in the body and regulating blood pressure.


They serve as a natural filter of the blood and remove waste from the body. They also reabsorb water, glucose and amino acids and produce regulatory hormones.
Illnesses affecting the kidneys include nephritic syndromes, renal cysts, renal cancer, chronic kidney disease, urinary tract infections, nephritis, urinary tract obstruction and kidney stones.

Urinary tract infections:

If you suspect you might have a urinary tract infection, it is important to get treatment quickly. A urinary tract infection is characterised by painful urination, frequent or strong urge to urinate (or both) and sometimes fever. 

The main bacterial cause of a UTI is an E.coli infection but other bacteria (and viruses and fungus) can also sometimes be the cause.

We normally recommend a mid-stream urine test to confirm that the prescribed antibiotic is a correct match for the infection.

Treatment can be started without but if your symptoms do not improve within 48 hours, we will recommend a test to be conducted.

Recurrent urinary tract infections:

If you have been experiencing recurrent urinary tract infections, investigation is important.

There might be a number of reasons why your infection is recurring or not clearing including a mismatch of antibiotic type with the causal bacteria.

This is why we usually recommend a mid-stream urine test (urine culture) to understand the exact bacteria causing your infection. 

We will also discuss testing for sexually transmitted diseases that can cause UTI-type symptoms such as burning when urinating.

Blood testing for kidney function:

Blood tests that look into whether your kidneys are functioning optimally are available.

They look at the levels of creatinine, urea and potassium in your system.