Abstract
Purpose: The use of dried blood spots (DBS) for HIV-1 viral load determination could greatly enhance the management of HIV infected individuals in resource-limited countries. Objective: To compare the HIV-1 viral load values obtained between parallel collected plasma and DBS. Materials and Methods: DBS and plasma samples were collected from 62 HIV-1 infected individuals and were used for determination of HIV-1 RNA concentrations using the Abbot real-time HIV-1 PCR. Result: Mean of the log difference of viral load values between plasma and DBS was –0.41 log. DBS viral load values significantly correlated with plasma viral load (r = 0.9818, P < 0.0001). Conclusion: These results suggest that DBS samples can be used as an alternative to plasma for the estimation of HIV-1 viral load if samples are appropriately stored.
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