Final answer:
People receiving indeterminate HIV test results should retest using a blood specimen collected 4 weeks after the initial test to ensure accurate results.
Step-by-step explanation:
People receiving indeterminate HIV test results should retest using a blood specimen collected 4 weeks after the initial test. This is because the seroconversion window for HIV is generally about three weeks, but in some cases, it can be more than two months. Antibody tests may not be accurate in detecting HIV antibodies until up to 3 months after the initial infection. Therefore, a retest using a blood specimen collected 4 weeks after the initial test is recommended to ensure accurate results.