Medical Database

The HIV Co-Receptor Tropism (Trofile) Assay is a specialized molecular test used to determine which co-receptor CCR5, CXCR4, or both an HIV strain uses to enter host CD4+ T cells. This information is clinically important before initiating CCR5 antagonist therapy, such as maraviroc, because these drugs are effective only against CCR5-tropic HIV strains. The assay analyzes viral envelope proteins, particularly gp120, to assess viral tropism and predict treatment response. Trofile testing is commonly performed in patients with treatment-resistant HIV infection or virologic failure. Results help clinicians personalize antiretroviral therapy and avoid ineffective medications. Enhanced-sensitivity versions of the assay can detect minor CXCR4-using viral populations, improving therapeutic decision-making and contributing to more precise HIV management and better long-term treatment outcomes. Learn more about the testing with Medical Database.
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A glucose tolerance test (GTT) is a diagnostic procedure used to evaluate how efficiently the body processes glucose. It is commonly performed to diagnose diabetes mellitus, prediabetes, and gestational diabetes. During the test, the patient fasts overnight, after which a fasting blood glucose sample is collected. The patient then drinks a standardized glucose solution, and blood samples are taken at specific intervals, usually over two hours, to measure changes in blood glucose levels. In healthy individuals, insulin helps move glucose into cells, causing blood glucose levels to return to normal. Abnormal results may indicate impaired glucose metabolism or insulin resistance. The test is especially valuable for detecting early abnormalities that may not appear in fasting glucose measurements alone. Learn more about the testing with Medical Database.