Kidney Function Test

About this test

What This Test Measures

This test measures three key kidney-related biomarkers:

• Creatinine: A waste product from muscle metabolism that is commonly measured in blood tests.

• Blood Urea Nitrogen (BUN): A waste product filtered by the kidneys and measured as part of routine testing.

• eGFR (estimated Glomerular Filtration Rate): A calculation based on creatinine levels and other factors, used to estimate filtration rate.

Together, these markers provide a clear overview of kidney-related biomarkers.

Why Monitor Kidney-Related Biomarkers

Kidney-related biomarkers can change over time and are commonly measured as part of routine testing. Monitoring these markers can help you:

• Track changes in kidney-related biomarker levels over time

• Establish baseline values for ongoing comparison

• Support informed discussions with healthcare professionals

• Understand how lifestyle factors may relate to these markers

Regular testing provides a simple way to stay informed about changes in these biomarkers.

How It Works

1. Order Your Kit: Order your At-Home Kidney Function Test online and have it delivered discreetly to your home.

2. Collect Your Sample: Use the included instructions to collect a small dried blood spot sample from your fingertip.

3. Send to Lab: Mail your sample to our CLIA-certified laboratory using the prepaid return envelope.

4. Get Your Results: Access your results securely online within a few days, with clear explanations and reference ranges.

Who This Test Is For

This test may be suitable for:

• Individuals interested in monitoring kidney-related biomarkers over time

• Those tracking changes in internal health markers as part of general health awareness

• People looking for a convenient at-home testing option

• Individuals who prefer private testing without visiting a clinic

• Those who regularly track personal health data

Testing provides a general overview of kidney-related biomarkers as part of routine monitoring.

Biomarkers included

• Blood Urea Nitrogen (BUN): Blood urea nitrogen (BUN) measures the amount of urea nitrogen in the blood. Urea is a waste product formed in the liver when protein is broken down, and it is normally filtered by the kidneys and excreted in urine. BUN is commonly used as part of an assessment of kidney function and hydration status. Elevated BUN levels may be seen with reduced kidney filtration, dehydration, higher protein intak
• eGFR (estimated Glomerular Filtration Rate): eGFR is an estimate of how well the kidneys are filtering waste products from the blood. It is calculated using a formula based on blood creatinine together with factors such as age and sex (and sometimes additional variables depending on the equation used). A higher eGFR generally indicates better kidney filtering capacity, while a persistently low eGFR can suggest reduced kidney function or chro
• Creatinine: Creatinine is a waste product formed in muscles from the normal breakdown of creatine. It is released into the bloodstream and filtered by the kidneys, then excreted in urine. Because creatinine levels are influenced by how efficiently the kidneys filter blood, it is commonly used to assess kidney function. Elevated creatinine may indicate reduced kidney filtration or kidney disease, while low lev

How to prepare

We recommend collecting your blood sample in the morning after an overnight fast (no food or drink except water), unless otherwise stated in your test kit instructions.

Frequently asked questions

What specifically does the GetTested At-Home Kidney Function Test measure and how does it work?

The GetTested At-Home Kidney Function Test is a dried blood spot (DBS) test designed to evaluate essential markers of renal health. It primarily measures Creatinine, Blood Urea Nitrogen (BUN), and calculates your estimated Glomerular Filtration Rate (eGFR), providing a comprehensive snapshot of how effectively your kidneys are filtering waste products. This method offers a convenient and reliable alternative to traditional venipuncture by analyzing a small blood sample collected at home, then processed in our CLIA-certified laboratory.

Who should consider using the GetTested At-Home Kidney Function Test?

This test is ideal for individuals monitoring their kidney health, especially those with increased risk factors for kidney disease such as diabetes, high blood pressure, a family history of kidney issues, or those taking medications that may impact renal function. It’s also beneficial for anyone seeking proactive insights into their overall organ health and functional wellness. Regular testing allows for early detection of potential changes, emphasizing preventive care even without a doctor's immediate order.

What is the sample collection process for the dried blood spot test, and what are the pre-test preparation guidelines?

The sample collection involves a simple finger-prick to obtain a few drops of blood onto a specialized collection card. Detailed instructions, including troubleshooting tips for successful collection, are provided in your kit. We recommend collecting your blood sample in the morning after an overnight fast (no food or drink except water). DBS collection ensures a less invasive and convenient experience compared to traditional clinical draws.

How quickly will I receive my Kidney Function Test results, and what is included in the price?

Your comprehensive results are typically available within 2-5 business days from the time our lab receives your sample. The price includes the complete at-home collection kit, laboratory analysis of your dried blood spot sample for Creatinine, BUN, and eGFR, and a secure, easy-to-understand digital report. All necessary shipping for returning your sample is also covered, ensuring a seamless and transparent process with no hidden fees.

How accurate and reliable are the results from this dried blood spot kidney function analysis?

Our GetTested At-Home Kidney Function Test processes samples in CLIA-certified laboratories, adhering to rigorous quality control standards to ensure high accuracy and reliability. While dried blood spot (DBS) testing is a validated method, nuances exist; variations could theoretically arise from improper collection or certain physiological states. Many independent studies support the concordance of DBS testing with traditional venipuncture for these specific kidney markers, providing trusted data for monitoring renal health parameters effectively. Our expert team continuously reviews methods to uphold the highest analytical standards.

How do I interpret my Creatinine, BUN, and eGFR results, and what if my results are outside the 'normal' range?

Your detailed report will clearly present your Creatinine, BUN, and eGFR values alongside established 'normal' reference ranges. While these ranges provide a general guide, individual variation exists and is influenced by factors like age, sex, and muscle mass. If any marker falls outside the expected range, it may indicate a need for further medical evaluation. Our reports are designed for clarity, but they do not replace professional medical advice; we guide you on discussing any anomalous findings with a healthcare provider for personalized interpretation and next steps.

Customer reviews

4.5/5 (2)

• 5/5 — I've been looking for an easier way to keep an eye on my kidney health since I have a family history of issues, and this test delivered! The kit arrived quickly, and the instructions for the dried blood spot collection were very clear and easy to follow. I was a bit nervous about doing the finger prick myself, but it was practically painless. Sending the sample back was simple with the prepaid envelope. I got my results back in just 4 business days, which was faster than I expected. The report was easy to understand, showing my Creatinine, BUN, and eGFR levels with clear explanations of what t
• 4/5 — Overall, this is a solid product for at-home kidney function testing. The concept of monitoring these levels from home is fantastic, especially with my busy schedule. The kit had everything I needed, and the information provided about fasting was helpful. My only minor gripe is the blood collection itself. It took me a couple of tries to get enough blood on the card, and some people might find it a bit fiddly. Once sent off, the turnaround time for results was exactly as stated, around 5 business days. The results report was comprehensive and clear, which I appreciated. It's a good alternative