In some of my tests I have seen '+' for elevated. I'm neither physician or phlebotomist but I would take the '=' to mean 'normal'/'within range'.

I'm surprised at the delay in getting blood results because with my local practice, they're usually the next day - the only one that takes time is the HBa1c for whatever reason. Most of the tests are automated now. But I suppose Easter would put a spanner in the works.

eGFR is "estimated Glomerular Filtration Rate" which is a kidney function test - I have it done regularly because of my diabetes and hypertension. It is a very good measure of how well your kidneys are doing.