Sexually transmitted infection (STI) screening results vary depending on the infection and the testing method used. Results can be qualitative (positive or negative) or quantitative (providing a numerical measure). For example, a blood test for HIV might yield a negative result, indicating the absence of antibodies, or a positive result, prompting further confirmatory testing. Alternatively, a urine test for gonorrhea or chlamydia might provide a positive or negative result based on the detection of bacterial DNA. Some tests may also offer numerical results, such as viral load for certain infections. Furthermore, some tests may provide information about antibiotic resistance.
Understanding STI test results is critical for timely diagnosis and treatment, helping to prevent potential long-term health complications and onward transmission. Early diagnosis facilitates prompt medical intervention, improving individual health outcomes and contributing to public health efforts to control STI spread. Historically, STI testing methods were less sensitive and specific than current technologies. Advances in diagnostics have greatly improved the accuracy and speed of STI testing, enabling more effective disease management strategies.