A Cautionary Tale about the Importance of Being Hydrated

After eighteen and a half years as a living kidney donor, you’d think I’d know better.

I’ve always been justifiably proud of my “numbers”: my creatinine (level of toxins in the blood) and my eGFR (estimated kidney function). Whenever I talk to legislative staffers or podcast hosts, I boast that at 76 I’m healthy and active (Zumba classes two to three times a week!) and have normal kidney function–results that would be enviable for someone with two kidneys!

Until October, that is.

That’s when I went for my annual check up and routine lab work. I was stunned at the results. For years I’ve always had normal kidney function (60 or up) and creatinine readings consistently under 1.02 (normal upper limit for women). Last year was much higher than my usual .85 but still “normal” at .94.

In October, for the first time in at least 10 years, my kidney function was a shocking 52. I conceded to my doctor that I don’t drink as much water as I should. I’m a bit embarrassed to admit I was always a little disdainful of donors who obsessively measure their fluid intake when I’d just been natural about it and always had good results. Apparently, I was getting sloppy. Last year’s .94 should have made me think twice about being so casual.

I know that creatinine readings can jump around a lot, so I was glad that my doctor suggested we retest after I came back from an upcoming trip. Let’s see if this is an anomaly, she said, adding “but be sure to be well hydrated when you test.”

We’d been back from our trip for about three weeks before I had the nerve to redo the test. I was waiting for optimal conditions. Uh-oh I wasn’t as consistent about drinking yesterday–better not test today. Uh-oh tomorrow I’m going to be out a lot and may forget to hydrate–better not test tomorrow.

I was obviously hoping for a big improvement but decided that I’d be relieved if my creatinine were down by even a little so that it would be clear the higher reading wasn’t part of an upward trend. I thought the new results could be available that evening so I watched anxiously for an email. Finally, the alert came during dinner. I raced to the computer.

Nervously, I clicked on the test results.

Drum roll please: It was .80–that’s even lower than it’s been in several years! And my eGFR? A whopping 76!

Whew. So, no, I still won’t start measuring my fluids–but will try to be mindful of always having a water bottle nearby and remembering to drink. Drink. Drink.

In addition to being reassuring, the lesson was empowering. It was a reminder that we can often still affect our health with simple daily habits. Whether you have one kidney or two (or three like my son, who has mine too), being hydrated is important for healthy kidneys.

Don’t give yourself a scare, like I did.

For related posts, resources, and information on The Insider’s Guide to Living Kidney Donation, be sure to explore the rest of my website.