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Kidney & Urinary Health
Question #21335
90 days ago
184

renal function test includes - #21335

Rohan

I am really worried about my health right now. Last week, I went to the doctor because I've been feeling super tired, and I lost my appetite. They did some blood work, and I found out I need to get a renal function test that includes checking my creatinine and urea levels. I read that a renal function test includes several components, but I’m not clear on what all of those are. My doctor didn’t really explain it, and I wasn’t sure what to ask at the time. I'm worried because my mom had kidney issues, and I am just kind of freaking out. Can anyone tell me what a renal function test includes exactly? Like, what does it measure, and why is it important? I want to be informed before my next appointment. I mean, is it only just those levels, or is there more? It just feels like I got thrown into this situation without much info. Any help on what a renal function test includes would really help me a lot! Also, how long do the results take usually? I’ve got sooo many questions!

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Doctors' responses

A renal function test measures several parameters that help evaluate how well your kidneys are working. The tests usually include assessing creatinine and urea levels, but it might also extend to other components. Creatinine is a waste product from muscle breakdown, and its levels in the blood give an insight into kidney function because your kidneys remove it from your blood. Urea, which comes from the breakdown of proteins, is another waste product that your kidneys should filter out. Elevations in these can indicate reduced kidney function, possibly pointing to chronic kidney disease or acute kidney injury, among other things. Beyond these, a renal function test often includes estimating the glomerular filtration rate (GFR), a more precise measure of kidney function that can detect changes earlier than creatinine levels alone. GFR is calculated based on your age, gender, and serum creatinine level. Other possible tests might involve electrolytes like sodium, potassium, and bicarbonate, which are crucial for your body’s fluid balance and overall chemistry. Sometimes, a urinalysis might be performed alongside to check for protein or blood in the urine. These tests can help uncover underlying issues like infections or early signs of kidney damage. Typically, results take a couple of business days depending on the lab’s processing times. Your concern about your mom’s history of kidney issues is understandable and should be communicated to your doctor, as it could adjust the context for interpreting your results. While the waiting might feel uncomfortable, staying informed and following up with your healthcare provider will provide you with clearer insights into your situation. Remember, it’s important to make sure that any specific questions or concerns you have are addressed during your next appointment.

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