What Is RFT Blood Test?

Charlotte Miller

Are you curious to know what is RFT blood test? You have come to the right place as I am going to tell you everything about RFT blood test in a very simple explanation. Without further discussion let’s begin to know what is RFT blood test?

In the realm of medical diagnostics, renal function testing (RFT) stands as a critical assessment aiding in the evaluation of kidney health. The RFT blood test, a subset of renal function tests, serves as a valuable tool for healthcare professionals to assess kidney function, detect abnormalities, and monitor conditions affecting renal health. Understanding the purpose, components, and significance of the RFT blood test is crucial in comprehending its role in diagnosing and managing kidney-related conditions.

What Is RFT Blood Test?

The Renal Function Test (RFT) blood test is a diagnostic procedure aimed at evaluating the efficiency of kidney function by measuring various parameters in the blood that reflect renal health. This comprehensive test panel typically includes assessments of multiple markers, providing insights into the kidneys’ ability to filter waste products, regulate electrolytes, and maintain fluid balance within the body.

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Components Of RFT:

The RFT blood test includes several key parameters:

  • Serum Creatinine: Creatinine is a waste product produced by muscles. Elevated levels of serum creatinine in the blood can indicate impaired kidney function as the kidneys normally filter and excrete creatinine.
  • Blood Urea Nitrogen (BUN): BUN measures the amount of nitrogen in the blood that comes from the waste product urea. Elevated BUN levels can indicate kidney dysfunction or other factors affecting urea production or excretion.
  • Electrolyte Levels: The test assesses levels of electrolytes such as sodium, potassium, and chloride, which are vital for maintaining fluid balance and proper kidney function.
  • Glomerular Filtration Rate (GFR): GFR is calculated based on creatinine levels and age, sex, and race. It estimates how well the kidneys are filtering waste from the blood and is a key indicator of kidney function.

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Significance And Clinical Use:

The RFT blood test plays a pivotal role in diagnosing various kidney-related disorders, including chronic kidney disease (CKD), acute kidney injury (AKI), urinary tract infections, and electrolyte imbalances. It aids healthcare providers in assessing the severity of kidney dysfunction, monitoring disease progression, and guiding treatment decisions.

Furthermore, the RFT blood test is often a routine part of health check-ups, especially for individuals with pre-existing conditions such as diabetes, hypertension, or a family history of kidney disease. Timely detection of abnormalities through RFT can enable early intervention, potentially preventing further kidney damage and complications.


The Renal Function Test (RFT) blood test stands as an invaluable tool in assessing kidney function and diagnosing renal disorders. By analyzing key blood parameters related to kidney health, this test provides essential insights into the functioning of one of the body’s vital organs.

Understanding the components and significance of the RFT blood test empowers healthcare professionals in accurately diagnosing renal conditions, initiating appropriate treatments, and guiding patients toward maintaining optimal kidney health. Regular monitoring through RFT aids in early detection and management of kidney-related issues, underscoring its significance in comprehensive healthcare and disease prevention.


What Is Difference Between RFT And Lft?

LFT = liver function test; RFT = renal function test; Gliben = diabetic-induced rats that received glibenclamide; Dmcont = diabetic-induced rats that received normal saline.

What Is A Normal RFT Creatinine Level?

For adult men, 0.74 to 1.35 mg/dL (65.4 to 119.3 micromoles/L) For adult women, 0.59 to 1.04 mg/dL (52.2 to 91.9 micromoles/L)

What Are The 3 Early Warning Signs Of Kidney?

Here are three signs that could indicate that you are beginning to experience a decline in kidney function.

  • Dizziness and Fatigue. One of the first possible signs of weakening kidneys is the experience of overall weakness in yourself and your overall health. …
  • Swelling (Edema) …
  • Changes in urination.

What Is The Normal Range For Kidneys?

If you have a GFR number of 60 or more together with a normal urine albumin test, you are in the normal range. But you’ll still want to talk to your doctor about when you should be checked again. If you have a GFR number less than 60, it may mean you have kidney disease.

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What Is RFT Blood Test