Save 25% on Earthshine & Kapruka Pre Orders NOW! Valid until 15 August.
Free Delivery for Orders over R1 500.00
The primary functions of the kidneys are to filter waste products and excess fluid from the blood to produce urine, maintain a balance of water, salts, and minerals in the body, regulate acid-base balance, control blood pressure, stimulate red blood cell production, and convert vitamin D into its active form.
Key Functions of the Kidneys
Red Blood Cell Production:
They produce erythropoietin, a hormone that stimulates the bone marrow to produce red blood cells.
Vitamin D Activation:
Kidneys convert inactive vitamin D into its active form (calcitriol), which is essential for calcium and phosphate balance and healthy bones.
Long-Term Health:
By performing these functions, the kidneys keep the blood composition stable and support overall health.
Waste Removal:
The kidneys act as filters, removing toxins and metabolic waste products like urea, creatinine, and uric acid from the blood, which are then excreted in urine.
Fluid & Electrolyte Balance:
They control the balance of water, sodium, potassium, calcium, and other electrolytes in the blood, helping to regulate plasma osmolality.
Acid-Base Balance:
Kidneys help maintain the body's pH level by producing and reabsorbing bicarbonate, which neutralizes acids.
Blood Pressure Regulation:
The kidneys produce the hormone renin, which is crucial for regulating blood pressure.
Signs and symptoms of chronic kidney disease develop over time if kidney damage progresses slowly. Loss of kidney function can cause a buildup of fluid or body waste or electrolyte problems. Depending on how severe it is, loss of kidney function can cause:
Nausea
Vomiting
Loss of appetite
Fatigue and weakness
Sleep problems
Urinating more or less
Decreased mental sharpness
Muscle cramps
Swelling of feet and ankles
Dry, itchy skin
High blood pressure (hypertension) that's difficult to control
Shortness of breath, if fluid builds up in the lungs
Chest pain, if fluid builds up around the lining of the heart
Two simple tests can check how well your kidneys are functioning. The first is a blood test called estimated glomerular filtration rate (eGFR) and the second is a urine test known as the urine albumin-creatinine ratio (uACR). Both tests are needed to have a clear picture of your kidney health.
Albumin to creatinine ratio (ACR) measures the albumin (a kind of protein) in your pee. Having too much albumin may mean your kidney’s filtering units have been damaged by disease. One positive result could be due to fever or heavy exercise, so your doctor will want to confirm your test over 3 months.
Estimated glomerular rate (eGFR) is a blood test measuring creatinine (a waste product from the digestion of dietary protein and the normal breakdown of muscle tissue) from which kidney function levels can be estimated. Aside from having kidney disease, creatinine levels can be affected by other factors, including diet, muscle (weight of your muscles), pregnancy, malnutrition, chronic illnesses, and more.
The kidneys play a vital role in maintaining physiological homeostasis by filtering the body's blood supply, which ranges from approximately 4.5 to 5.5 litres. They are responsible for removing toxins and excess fluids. As blood circulates through the body around 400 times per day, the kidneys collectively filter close to 200 litres of blood daily—equivalent to about 1.3 litres per minute, depending on fluid intake. Each kidney contains approximately one million nephrons, specialised microscopic filters that facilitate this essential cleansing process.
Two simple tests can check how well your kidneys are functioning. The first is a blood test called estimated glomerular filtration rate (eGFR) and the second is a urine test known as the urine albumin-creatinine ratio (uACR). Both tests are needed to have a clear picture of your kidney health.
Albumin to creatinine ratio (ACR) measures the albumin (a kind of protein) in your pee. Having too much albumin may mean your kidney’s filtering units have been damaged by disease. One positive result could be due to fever or heavy exercise, so your doctor will want to confirm your test over 3 months.
Estimated glomerular rate (eGFR) is a blood test measuring creatinine (a waste product from the digestion of dietary protein and the normal breakdown of muscle tissue) from which kidney function levels can be estimated. Aside from having kidney disease, creatinine levels can be affected by other factors, including diet, muscle (weight of your muscles), pregnancy, malnutrition, chronic illnesses, and more.
The kidneys play a vital role in maintaining physiological homeostasis by filtering the body's blood supply, which ranges from approximately 4.5 to 5.5 litres. They are responsible for removing toxins and excess fluids. As blood circulates through the body around 400 times per day, the kidneys collectively filter close to 200 litres of blood daily—equivalent to about 1.3 litres per minute, depending on fluid intake. Each kidney contains approximately one million nephrons, specialised microscopic filters that facilitate this essential cleansing process.
Save 25% on Earthshine & Kapruka Pre Orders NOW! Valid until 15 August.
Free Delivery for Orders over R1 500.00