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what is creatinine serum
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Kidney & Urinary Health
Question #22698
137 days ago
239

what is creatinine serum - #22698

Ayush

I am really confused and a bit worried about my recent lab results. My doctor mentioned something about "what is creatinine serum" when I asked about my kidney function. I thought everything was fine until I got a call saying my creatinine serum levels were higher than normal. They didn’t really explain much over the phone, just said I should come in. I've been feeling kinda off lately, like I've had some fatigue and maybe a bit of swelling in my ankles. I don’t know if that’s related. Anyway, I looked it up and saw that creatinine is some waste product and that it’s supposed to be low for healthy kidneys, but what is creatinine serum really supposed to tell me? I mean, if my levels are high, does that mean my kidneys are like not working properly? My aunt had kidney issues, and I'm freaking out thinking I might be in the same boat now. What does this mean for me? Should I be super concerned? Also, can changes in diet or hydration affect my creatinine serum levels? I could really use some clarity before I talk to my doctor again.

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Doctors' responses

Creatinine serum, essentially, is a measure of creatinine in your blood. Creatinine itself is a waste product that’s produced by muscle metabolism and is typically filtered out of the body by the kidneys. When your kidneys are functioning well, they do a good job of keeping your blood creatinine levels within a normal range. If those levels are high, it could suggest that the kidneys might not be filtering out waste as efficiently as they should be. That’s likely why your doctor wants to discuss your results further. High creatinine levels sometimes point towards kidney dysfunction, but it’s just one piece of the puzzle. Fatigue and swelling in your ankles are indeed potential signs of kidney issues, worth bringing up in more detail at your next medical visit.

However, it’s also not uncommon for creatinine levels to be temporarily elevated due to factors like dehydration, a high-protein diet, or just because of normal muscular activity. So yes, changes in diet and hydration can influence creatinine serum levels, particularly if you’ve not had enough fluids or if you’ve been altering your protein intake. Other factors, like medications or supplements you’re taking, may also affect these levels. Of course, though, context is crucial. Elevated creatinine doesn’t automatically mean you’re destined to have serious kidney issues, especially since there can be various reasons behind that increase.

When you see your doctor, they might perform additional tests to better assess your kidney function, such as a GFR (Glomerular Filtration Rate) or a urine test to look for protein or other markers. Be sure to discuss your symptoms, like the fatigue and swelling, as these details can help in determining the next steps. Your doctor can also advise you if dietary changes or hydration adjustments are necessary to help manage or reduce potential risk factors. Getting a full picture is essential, so try not to jump to conclusions before all the information is gathered. Your doctor can help you figure out what this means for your specific circumstance and guide you through any necessary lifestyle or treatment adjustments.

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