Firstly, I'm sorry for your loss. That testing is available at labcorp. It's just karyotyping like you would do with an amnio or CVS. I'd complain to your provider. It's very strange for them to send it to california. It's a very simple, straight-forward, and common test. IF the link below doesn't work, go to the labcorp website, click on test menu and type in karyotype. It's test # 052068.
https://www.labcorp.com/wps/portal/!ut/p/c1/04_SB8K8xLLM9MSSzPy8xBz9CP0os_hACzO_QCM_IwMLXyM3AyNjMycDU2dXQwN3M6B8JG55AwMCuv088nNT9SP1o8zjQ11Ngg09LY0N_N2DjQw8g439TfyM_MzMLAz0Q_QjnYGKIvEqKsiNKDfUDVQEAARgwHA!/dl2/d1/L0lJWmltbUEhL3dQRUJGUUFoTlFBaERhQUVBWEtHL1lJNXlsdyEhLzdfVUU0UzFJOTMwT0dTMjBJUzNPNE4yTjY2ODAvdmlld1Rlc3Q!/?testId=407424#7_UE4S1I930OGS20IS3O4N2N6680