Measure PCB inductor
Yes, there are too many parasitic capacitance/inductance from the the dark blue color metal plates (fringing capacitance to your ustripe pads, long via inductance). I will guess this piece of metal plate is for shielding purpose, am I right? From the observation of structure of your inductor, this metal plate will significantly reduce the inductance of your inductor. Pls refer the attached Ind design, which is measured by GSG RF probes, but you can use CPW line to extend your GSG probe to the edge of your PCB sample, where you can solder the SMA connector. My only concern could be the FR4 mightbe too loss at high frequency, which will bring us trouble to do de-embedding.
Regards,