The alternative is not testing it. Buy and use some appropriate PPE, assuming it is asbestos and dispose of it accordingly.
I did this with my garage roof. I was unsure whether it was or wasn't asbestos. Even with a test certificate showing it was not asbestos the local tip would have charged me for disposal of rubble and I think that they would have been difficult with accepting it. The other local tip didn't charge for disposal of asbestos as long as it was double bagged. The cost saved on the test bought the bags and the PPE.
I did this with my garage roof. I was unsure whether it was or wasn't asbestos. Even with a test certificate showing it was not asbestos the local tip would have charged me for disposal of rubble and I think that they would have been difficult with accepting it. The other local tip didn't charge for disposal of asbestos as long as it was double bagged. The cost saved on the test bought the bags and the PPE.