Can getting a tattoo affect your kidneys?

No! it's doesn't affect your kidneys

if u didn't take care of it, yes, the ink can fade into ur skin and hurt u.

(New Respondent)

Modern inks very rarely have side effects, due to the omission of things like Iron Oxide which caused allergic reactions in RARE cases.

If you do have any serious medical conditions then please speak to your doctor and let the tattoo artist know beforehand, but as for affecting your kidneys, it ain't gonna happen

New answer

No these days tattoos don't affect the inside of the body. The ink only goes into the top layers of the skin. Even if you do get an infection it shouldn't affect the inside of your body. If you have any Allergies or medical conditions that could affect you while getting tattooed then talk your doctor and a tattooist before getting tattooed.