Current capacity of laser drilled micro vias
If this is a critical application, you should sample the board with the laser vias and then micro section a number of them and examine the cross sections under an SEM. A discussion with your board supplier about their process controls to ensure consistency in the deposition thickness is also warranted.

A less rigorous test, although perhaps a good supplementary one, is to build a board with sample vias and conduct current tests between the planes and measure the voltage drop. Statistical sampling should be used to obtain more reliable results.