Researchers surveyed infectious disease doctors across the United States about their use of a simple blood test that detects cryptococcal fungal infections in HIV patients before symptoms appear. The test, called cryptococcal antigen (CrAg) screening, can prevent serious illness and death if caught early, but the survey found that many doctors are not using it consistently. About 42% of doctors were unsure about the benefits of the test, and another 32% were confused about current screening recommendations, revealing a need for better education about this important preventive tool.