Anthony Cantu, 31, counsels patients at a San Antonio health clinic about a daily pill shown to prevent HIV infection. Last summer, he started taking the medication himself, an approach called preexposure prophylaxis, better known as PrEP. The regimen requires laboratory tests every three months to ensure the powerful drug does not harm his kidneys and that he remains HIV-free.
But after his insurance company, Blue Cross and Blue Shield of Texas, billed him hundreds of dollars for his PrEP lab test and a related doctor's visit, Cantu panicked, fearing an avalanche of bills every few months for years to come.
