Was Poked With Needle At Work, Employer Refusing To Pay For Testing

So I used to work as an MA, and during my work there I poked myself with needle. I immediately told my superiors who seemed a bit irritated by me wanting to make it an official incident, but shortly afterwards I contacted my administrator, and he said he would pay for testing. So I get the hep c and hiv panel at the clinic. Mind you, I don’t have insurance, and I’ve no idea why it would be billed to me in the first place.

Well, a month later, I receive a bill in the mail for 1000+ for the labs. I immediately present it to my administrator quite disgruntled. He takes the bill, tells me he’ll pay for it.

Since then, I’ve quit this job as the admin was notoriously negligent (as in disappearing for months and refusing to pick up calls). Now, I’m checking my mail, labcorp has put my account in delinquent status as 4+ months later, the admin never paid the bill. This clinic has no HR department btw, if that’s relevant. I’ve since texted and called the admin, but knowing him I won’t get a response in the next three months if at all. But I’m pretty broke and don’t think I could afford a good lawyer… how do I proceed?