--if they are mostly fine now . . . or in your most recent testing . . .

There are a million things that can make blood test values go out of range temporarily. Infection, electrolyte imbalance, on and on and on.

I don't know, also, if there's enough there to really get a clue on what may have been happenig at the time, although the elevated ESR would indicate some inflammation (hardly surprising). The others point to some imbalance in the kidney/liver function, which may also explain the iron problems . . .

This would not be unexpected if, as we suspect, you had an inflammatory autoimmune reaction after a pathogen, especially if there was a gut inflammation, causing at least temporary malabsorption or overexcretion of nutrients.