Is this an antibody test to see if you had Covid previously, or a PCR test to see if you have it now?

An "undetermined" result on the antibody test means the test did not confirm the current presence of antibodies, nor did it confirm no antibodies. Here is some info - https://www.childrenshospitalurgentcare.com/covid-19/antibody-vs-molecular-testing/#:~:text=Indeterminate%3A%20An%20indeterminate%20result%20means,to%20be%20reported%20as%20reactive.

Here is what Mayo Clinic Labs have to say about PCR testing - https://www.mayocliniclabs.com/test-catalog/Clinical+and+Interpretive/608825

A repeat of the test is recommended if Covid is suspected.

Sue