If flashes of light or floaters occur suddenly or in great numbers, or if you are not sure what to do, do not wait for vision loss to occur before you call your doctor. If you cannot reach your doctor, go to the emergency room.
If viral RNA is detected, a positive result is reported; if viral RNA is. not detected, the test result is negative. â¢ Quantitative viral load tests â These tests measure the amount of virus in. one milliliter of blood. In the past the level of the viral load was correlated with.
1 HCV RNA test, Quantitative (HCV viral load) detects and measures the number of viral RNA particles in the blood. This test may be used to confirm the presence of the virus and diagnose an active infection. 2  HCV RNA, Qualitative is used to distinguish between a current or past infection.