The same thing happen to be my levels were always low, when I saw it went from 324 to 600 in a year i asked the Dr. and she said she was worried about it to wait until next year. Good I went back and had my blood work done the following year because it had went up to the 700s. I had taken the covid vaccination and had shingles all in one year then the high platelets. They are back in the 200s hopefully she reduces my mg when in go back and pray the numbers stay down. I heard the go up and down.