Before you make any decision you need to know the actual breakdown. You need your HDL, your LDL and your triglycerides. The total of 5.5 is just the total of the good and the bad. Perhaps you could ask for a print out of the test results so you have these figures in front of you. The total is made up of:
HDL (good) + LDL (good and bad) + 46% of the triglycerides (bad) (UK measurements)
Then you need to work out the triglyceride/HDL ratio. To do this simply divide the trigs by the HDL. The result ideally should be under 0.87 (UK)
This is really good to know, thanks! I've recently switched hospitals, and my old consultant always told me my cholesterol was relatively high which was due to a high LDL level, so he was never worried about it. My first appointment with my new clinic my DSN told me my cholesterol was too high, but this was never broken down to the different types. I will definitely look into this further if my next blood test brings this up again.