your doc ordered a wrong test, which is for N protein

https://www.google.com/url?q=https://www.sunriselab.com/media/Multisite5073/fax-blast-for-sml-ma-51520.pdf&sa=U&ved=2ahUKEwjY5MmtiovxAhX0dc0KHa0RCm4QFjAAegQICBAB&usg=AOvVaw1oTjh5g_nmalRB8gCjbFjz

Test Code: F689
Test Name: SARS-CoV-2 Antibodies

The Roche Elecsys Anti-SARS-CoV-2 assay uses a recombinant protein representing the nucleocapsid (N) antigen for the determination of antibodies against SARS-CoV-2, including IgG.

 

这个是专为新冠感染后恢复期病人用的。

 

 

Kroger or CVS have some rapid tests, which is for both S and N antigens, and good for vaccine receivers.