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. Author manuscript; available in PMC: 2012 Jun 1.
Published in final edited form as: Int J STD AIDS. 2011 Jun;22(6):310–314. doi: 10.1258/ijsa.2009.009363

Figure 1.

Figure 1

Correlation analysis of ultrasensitive p24 antigen assay (log10 fg/ml) and reverse transcriptase by polymerase chain reaction RT-PCR (log10 copies/ml) for HIV-1 viral load. N=394. Up24 antigen = 0.87 + 0.50 * RNA; r2 = 0.33; Pearson correlation coefficient = 0.58 (P-value < 0.0001).

“*” represents samples collected from participant naïve to ART, N=213.

“○” represents samples collected from participant on ART, N=181.

Up24 values ranged from 1.9 log10 fg/ml to 6.0 log10 fg/ml. RT-PCR values ranged from 2.6 log10 copies/ml to 6.0 log10 copies/ml.