ArticleJournal of clinical virology : the official publication of the Pan American Society for Clinical Virology2013
Successful use of Plasma Preparation Tubes™ (PPTs) in the COBAS® AmpliPrep/COBAS® TaqMan® HIV-1 test.
Article in Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.
What it found
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Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.
- Systematic review of the accuracy of plasma preparation tubes for HIV viral load testing.PloS one · 2019Pooled it
- Reliability of plasma HIV viral load testing beyond 24 hours: Insights gained from a study in a routine diagnostic laboratory.PloS one · 2019Article
- Estimation of measurement error in plasma HIV-1 RNA assays near their limit of quantification.PloS one · 2017Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundSince switching to the COBAS(®) AmpliPrep/COBAS(®) TaqMan(®) HIV-1 Test, v. 1.0 from the Amplicor HIV-1 Monitor Test, v. 1.5, an increase in detectable viral load results was noted. We were concerned that this was due to the use of Plasma Preparation Tubes (PPT) in this test.
objectiveTo assess the impact of different pre-analytical processing conditions on HIV-1 viral load results on the COBAS(®) AmpliPrep/COBAS(®) TaqMan(®) HIV-1 Test. STUDY
designSixty-three HIV-infected patients were consented and had 3 PPTs and 1 K2EDTA drawn for HIV-1 viral load testing. Three methods of PPT processing were compared against the referent K2EDTA tube which was spun at 1100 × g for 20 min, poured off and frozen; PPT1 was refrigerated with an additional centrifugation prior to testing, PPT2 was processed similarly to EDTA, and PPT3 was centrifuged, frozen and centrifuged again prior to testing.
resultsPPT1 and PPT3 yielded results that were most similar to the referent EDTA processing, with a concordance correlation coefficient (CCC) of 0.80 and 0.85, compared to PPT2 with CCC of 0.37. Both PPT1 and PPT3 involved additional centrifugation prior to testing. In 26 patients with residual samples from the PPT2 processing, 9 (34.6%) were found to have the presence of proviral DNA, which likely contributed to the elevated HIV-1 RNA viral loads in these individuals.
conclusionPPTs can be used in the COBAS(®) AmpliPrep/COBAS(®) TaqMan(®) HIV-1 Test with an additional centrifugation in order to avoid misleading elevated HIV-1 RNA viral loads that may change patient management.
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