The COBAS AmpliPrep/COBAS AMPLICOR HIV-1 MONITOR Test, version 1.5 (CAP/CA), and the COBAS AMPLICOR HIV-1 MONITOR Test, version 1.5, were compared. CAP/CA reduced and consolidated labor while modestly increasing assay throughput without increased failure rates or direct costs, regardless of batch size and assay format.
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http://dx.doi.org/10.1128/JCM.00656-07 | DOI Listing |
Background: Blood or plasma samples from rural areas are often transported under suboptimal conditions to central laboratories. The negative influence of different storage temperatures during transportation as well as long transportation times on the stability of unprotected HIV RNA is well known. Therefore, the correct and reliable quantification of HIV RNA might be very difficult.
View Article and Find Full Text PDFZhonghua Nan Ke Xue
May 2018
Department of Urology, Guangzhou Eighth People's Hospital, Guangzhou, Guangdong 510070, China.
Objective: To evaluate the semen quality of the HIV/AIDS male patients after treated by the highly active antiretroviral therapy (HAART) and their potential of transmitting HIV/AIDS and provide some evidence for this cohort of males who wish for parenthood.
Methods: We collected semen samples from 20 HIV/AIDS male patients who had been treated by HAART for over 6 months and wished for parenthood. We examined sperm concentration, viability and total motility and the percentage of morphologically normal sperm (MNS) using the computer-assisted semen analysis system, measured the HIV-1 RNA loads in the semen by the Cobas Amplicor Monitor test, and counted CD4+ T cells in the peripheral blood by flow cytometry.
J Virol Methods
November 2018
Rush Medical College, Department of Microbial Pathogens and Immunity, Chicago, IL, USA.
Background: Commercially-available kits for HIV-1 detection include instructions for detecting HIV-1 in plasma and DBS, but don't support other specimen types.
Objectives: Show quantitative stability of HIV-1 total nucleic acid (TNA) in blood and improved HIV-1 detection in alternative specimen types.
Study Design: Whole blood and DBS specimens, tested as part of an external quality assurance program for qualitative HIV-1 detection, were used to evaluated error rates (false negative [FN], false positive [FP] and indeterminant [IND] results) across assays (internally developed [IH], Roche Amplicor [RA], and Roche TaqMan Qual [TQ]) and specimen types (frozen whole blood [BLD], DBS and cell pellets [PEL]).
Zhong Nan Da Xue Xue Bao Yi Xue Ban
July 2017
Department of Infectious Diseases, Xiangya Hospital, Central South University, Key Laboratory of Viral Hepatitis of Hunan Province, Changsha 410008, China.
To observe the sensitivity of transcription mediated amplification (TMA), and to compare its performance with real-time reverse transcription polymerase chain reaction (real-time RT-PCR) in detecting human immunodeficiency virus RNA (HIV RNA). Methods: TMA system was established with TaqMan probes, specific primers, moloney murine leukemia virus (MMLV) reverse transcriptase, T7 RNA polymerase, and reaction substrates. The sensitivity of TMA was evaluated by amplifying a group of 10-fold diluted HIV RNA standards which were transcribed in vitro.
View Article and Find Full Text PDFPLoS One
August 2017
British Columbia Centre for Excellence in HIV/AIDS, Vancouver, British Columbia, Canada.
Background: Plasma HIV-1 RNA levels (pVLs), routinely used for clinical management, are influenced by measurement error (ME) due to physiologic and assay variation.
Objective: To assess the ME of the COBAS HIV-1 Ampliprep AMPLICOR MONITOR ultrasensitive assay version 1.5 and the COBAS Ampliprep Taqman HIV-1 assay versions 1.
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