Basic Kidney Screen


The kidneys filter your blood and remove waste products that form from the breakdown of normal cell activity in the body. This basic screen assesses your levels of sodium, creatinine, urea and your estimated glomerular filtration rate.

Have a look at our extended kidney screen here

SKU: RD012 Category:


The kidneys filter your blood and remove waste products that form from the breakdown of normal cell activity in the body. They regulate the body’s pH and the level of electrolytes which are essential for the body to function correctly, maintaining fluid balance and regulating pH.

Our renal test will check your sodium levels. Two waste products produced by the kidneys, creatinine and urea will also be checked. High levels of these chemicals may suggest kidney disease, damage or failure or be the result of dehydration.

The amount of blood filtered by the glomeruli in the kidneys known as the estimate glomerular filtration rate (eGFR) is calculated from the creatinine test result and shows how well your kidneys are filtering your blood.

  • Creatinine
    Creatinine is a waste product that is produced continuously during normal muscle breakdown. The kidneys filter creatinine from the blood into the urine, and it is then eliminated from the body. Because muscle tissue is fairly constant in the body, the production of creatinine tends to be relatively stable on a daily basis. Elevated blood creatinine levels can indicate impaired kidney function or kidney disease. It can also be temporarily increased by a high meat diet, certain medications, and heavy exercise. Low levels are less common and are usually not a concern, but they can be associated with conditions that result in decreased muscle mass.

  • Estimated Glomerular Filtration Rate (eGFR)
    Estimated Glomerular Filtration Rate (eGFR) is a key test used to assess kidney function. It estimates the rate at which the kidneys filter waste products from the blood. eGFR is calculated using serum creatinine levels, along with factors like age, sex, and body size. A normal eGFR indicates good kidney function, while a low eGFR suggests impaired kidney function, potentially signifying kidney disease. This test is crucial in detecting early kidney damage, monitoring kidney disease progression, and determining the effectiveness of treatment for kidney-related conditions. Regular eGFR testing is particularly important for those with risk factors for kidney disease, such as hypertension or diabetes.

  • Sodium
    Sodium is an essential electrolyte in the human body, primarily involved in regulating fluid balance, nerve function, and muscle contraction. It is crucial for maintaining blood pressure and is a key component of plasma, lymph, and extracellular fluid. Sodium levels in the body are tightly controlled, and imbalances can have significant health implications. High sodium intake is commonly associated with high blood pressure and cardiovascular diseases, while low sodium levels can lead to hyponatremia, affecting neurological functions.
    • High Levels (Hypernatremia): Often due to dehydration or certain hormonal imbalances.
    • Low Levels (Hyponatremia): Can result from conditions causing fluid imbalance, certain medications, or heart, kidney, or liver problems.

  • Urea
    High levels can indicate kidney dysfunction or conditions that reduce blood flow to the kidneys.

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How it Works

Choose one of our test packages according to your needs – whether this would be general health screening, nutritional state, sexual health or monitoring of a chronic condition and get it delivered to your home or office.


Perform the test at your comfort zone. This will require a fingerprick, swab of urine sample collection. Instructions will be included in your kit. Post it back to one of our accredited laboratories in a prepaid envelope.


We will notify you when results are available and you can access it in your dashboard together with advice from our health experts. Repeat tests as recommended and track results to keep your health in a good shape all the time.

Video tutorial

This video shows step-by-step guidance on how to use The Red Drop blood collection kits