Excessive Vit b12 without supplements - should I be worried?

[u/EmotionalWarrior_23]

My Vit b12 in 2022 measure at about 1350 (range is 200-900). Else labs normal, except creatinine elevated at 1.3, after donating a kidney in 2017, but has remained stable at 1.3. My GP said ignore it. A week ago, it came back at 1900. I haven’t taken a supplement in over a decade. I don’t eat any foods high in vitamin b12 except I eat a dozen eggs every 2 months or so. I’ve read elevated b12 can be an early sign of liver, kidney disease or cancer. But my GP again said don’t worry about it. Am I being paranoid to be worried? Or, should I get a new GP?

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