Glad to hear you're ok considering how dangerously close to collapsing you were. That level of creatinine is absolutely nuts.
A friend of mine had problem with her kidneys (kidney stones from a lack of water) and I literally had to carry from the bathroom. The renal system is no joke. Your blood is what moves you.
I wonder if the no carbs diet is what really did you in. Despite eating more meat, the jump in levels is extremely abnormal. I'd be interested to hear what your doctor had to say about it and a little more about what you ate this past month, if you feel comfortable sharing.