Triglycerides from 25 to 290 -- why?

Throughout my entire life, it has never been higher than 25. Today, my test showed 280.

This is especially surprising because I have lost 35 pounds since last year (210 to 173 -- 6'0) as I've worked to eliminate very low levels of Fatty Liver.

Total Cholesterol is 104, HDL is 77, Glu is 94, LDL was N/A, but is generally under 20.

Any thoughts?