Is genetic testing for scn9a readily available through a geneticist? how to locate this biologist?

Severe ctl neutrop'?: Do you mean severe congenital neutropenia (scn)? I am not sure what 9a stands for. Thus far we have the following gene mutations known for scn, ela2 (sporadic*); gfi1, csf3r (ad); was (xl); hax1 (ar). Ad stands for autosomal domiant, xl, x linked, and ar autosomal recessive. Please clarify what you mean by 9a.

That and more: Genetic testing can be ordered by any physician, not just a clinical geneticist. But is this the best test for you? That's rather complicated, and the logical answer is that you should have a thorough evaluation prior to testing. You may need something different. Plus, you need someone to help you understand the results. To find a geneticist, ask your regular doc or google "clinical genetics".