A Kidney blood test is enough to investigate the health of our kidneys. Let’s find out more with the specialist.

Some laboratory tests can check actual kidney function to know if our kidneys are working as they should. We discuss it with Dr. Linda Fezzardi, Head of the Chelsea Clinical Institute Analysis Laboratory.

Should the renal panel be done?

The renal panel includes a battery of tests useful for evaluating renal function. These tests measure the quantity of various substances in the blood, including sugars, proteins, mineral salts and electrolytes.

Specifically, the tests included in the renal panel include the measurement of:

  • Glucose in the blood (which represents the main energy source of our body); proteins such as albumin (whose role in keeping fluids within the blood vessels and in the transport of hormones and vitamins is fundamental);
  • Minerals such as phosphorus and calcium (the former essential for energy production, the latter essential for correct muscle, nervous system and heart function);
  • Electrolytes (important for maintaining acid-base balance but also for various body processes); waste products such as urea (released by the liver into the bloodstream and into the kidneys where it is filtered and eliminated through urine); and creatinine (waste product produced by muscles).
  • Glomerular filtration rate: a value not to be underestimated

Another Kidney Blood Test value to investigate that can be included within the renal function panel is the glomerular filtration rate (eGFR), thanks to which you can estimate the amount of blood filtered by the glomeruli in the kidney in a minute.

The glomerular filtration rate is a formula that also takes into account some characteristics of the patient who performs it, such as:

  • Age
  • Type
  • Race
  • Weight
  • Height

Various diseases can cause renal failure:

  • Urinary tract infections;
  • Calculations;
  • Malformations;
  • Hereditary diseases;
  • Glomerulonephritis (diseases of inflammatory origin which particularly affect the glomeruli, causing generalized swelling and blood in the urine);
  • High blood pressure (more rarely);
  • Diabetes (more rarely).
  • In renal failure, the “cleaning and “process” work carried out by the kidneys is damaged. Older people are generally more likely to develop it.

In case of renal failure, the “cleaning” and “process” work carried out by the kidneys is damaged. Older people are generally more likely to develop it.

The rules

In addition to monitoring the function of our kidneys over time, to balance the onset of chronic kidney diseases, it is suggested to adopt a healthy lifestyle by avoiding habits and behaviours such as:

  • Sedentary lifestyle;
  • Unregulated eating;
  • Abuse of salt and tobacco;
  • Prolonged drug intake.
  • The extent of renal failure

To check the extent of renal failure, the glomerular filtration rate is calculated, thanks to which the leftover renal function is estimated, and its progress can be followed over time.

Based on the data, further renal failure is divided into different stages of severity:

In the early stages, no characteristic symptoms are felt.

Only the Kidney blood Testing values that specifically express renal function, i.e. creatinine, are altered. Subsequently, there is also an alteration in the levels of uric acid, calcium, phosphorus, bicarbonate, and parathyroid hormone and a reduction in red blood cells.

Finally, in the advanced stage, the symptoms of anaemia increase, blood pressure values ​​rise, and it is necessary to take various drugs to correct the changes of all the substances so the kidney can no longer function well.

If the situation worsens, i.e. when the glomerular filtration rate drops below 10 ml/min, cleaning with machines is likely.