Got my cholesterol levels back: Overall its 4.4 - (170 mg/dl) - HDL - 43 LDL - 140 - Triglycerides - 106? doesn't make sense. Normal?

Don't just add. The chemical principles used for these assays admit of several percent error which is fine, since we're looking at the big picture. Total cholesterol, LDL cholesterol, and HDL cholesterol are all determined in different ways. This is a common point of confusion.