72mg/l urine protein then came back 60mg/l (not 24hr sample) gp says it is normal to have protein also refusing to do a 24hr collection or ultrasound!

He's right: Some protein is normal in the urine. It comes from the tubules, bladder, and very little from the glomerulus which is the part you may be worried about. Just do a protein to creatinine ratio. No need for 24 hr urine collection.

Proteinuria: If you're not getting a 24hr sample, a simpler test is to measure the amount of protein/gr of creatinine in a random sampled urine. Normal is (in most labs).