What is Mandelbug? The meaning of Mandelbug In computer programming, mandelbug is a classification of an unusual software bug that is so complex that its behavior appears chaotic or there is no practical solution to fix it. An examplele of this type of bug would be a fundamental design flaw in an operating system.
The window period is the time from infection until a test can detect any change. The average window period with HIV-1 antibody tests is 25 days for subtype B. Antigen testing cuts the window period to approximately 16 days and NAT (Nucleic Acid Testing) further reduces this period to 12 days.he average window period with HIV-1 antibody tests is 25 days for subtype B. Antigen testing cuts the window period to approximately 16 days and NAT (Nucleic Acid Testing) further reduces this period to 12 days.
Different types of antibody tests may be used for HIV screening: 1  All HIV tests used in the U.S. detect HIV-1, and some tests have been developed that can also detect HIV-2. 2  Combination tests have been developed that detect HIV antibody and the HIV antigen called the p24 antigen. Verify a positive with a second HIV antibody test that differentiates between HIV-1 and HIV-2. 2  If results between the first and second test do not agree, then the next test to perform is a HIV-1 RNA test (nucleic acid amplification test, NAAT).