Jan 30, 2011
Why is plasma (and NOT serum) used for testing for HIV viral load, but for HCV and Hepatitis B viral loads, serum if fine. Many thanks
Response from Dr. Holodniy
It's basically how the test was developed and approved. HIV is found readily in serum and plasma, as is HCV and HBV. For HCV and HBV, most vendor instructions indicate that either serum or plasma is acceptable for viral load testing.
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