ELU - measures urea and electrolytes to see if your kidneys are functioning.
Bone Profile - measures minerals and enzymes in the bones, calcium and phosphate etc. Used for checking liver and thyroid function, and for ruling out bone diseases like osteoporosis etc.
LFT - checks to see if your liver is working properly.
HbA1c - blood sugar, to see if you’re diabetic.
CRP - measures the level of a protein that your liver makes. High levels can mean you have a condition that’s causing inflammation.
Vitamin D - to see if you have a Vit D deficiency.
FBC - full blood count, to see if you have enough blood cells and if they’re the right size and distance apart etc. It can identify conditions like anaemia.
AUTO DIFF - looks at your white blood cells to see if you have an infection, inflammation, etc.
These are all very general and it sounds like the GP is doing some exploratory tests because they don’t know what’s wrong with you. What are your symptoms?