Evidence map›Paper›PMID 24603442›Full record

SynthesisPloS one2014

Systematic review of the use of dried blood spots for monitoring HIV viral load and for early infant diagnosis.

Pieter W Smit, Kimberly A Sollis, Susan Fiscus, Nathan Ford, Marco Vitoria, Shaffiq Essajee, David Barnett, Ben Cheng, Suzanne M Crowe, Thomas Denny and 5 more

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
77citing papers in PubMed, 6 pooled it
9.3field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

77 citing papers in PubMed, 6 syntheses or guidelines pooled it, 139 citations in OpenAlex.

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  20. Nucleic acid amplification testing using dried blood spots to confirm the diagnosis of HIV-1 in adults.Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology · 2024
    Article

17 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 8 institutions in 5 countries.

Pieter W SmitDepartment of Clinical Research, London School of Hygiene and Tropical Medicine, London, United Kingdom.
Kimberly A SollisDepartment of Clinical Research, London School of Hygiene and Tropical Medicine, London, United Kingdom.
Susan FiscusDepartment of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina, United States of America.
Nathan FordDepartment of HIV/AIDS, World Health Organization, Geneva, Switzerland.
Marco VitoriaDepartment of HIV/AIDS, World Health Organization, Geneva, Switzerland.
Shaffiq EssajeeHIV, Medicine and Science, Clinton Health Access Initiative, New York, New York, United States of America.
David BarnettDepartment of Haematology, UK NEQAS for Leucocyte Immunophenotyping, Sheffield, United Kingdom.
Ben ChengDepartment of Technology and Innovation, Pangaea Global AIDS Foundation, San Fransisco, California, United States of America.
Suzanne M CroweCentre for Biomedical Research, Burnet Institute, Melbourne, Australia.
Thomas DennyDepartment of Medicine, Duke Human Vaccine Institute and Center for HIV/AIDS Vaccine Immunology, Durham, North Carolina, United States of America.
Alan LandayDepartment of Immunology- Microbiology, Rush University Medical Center, Chicago, Illinois, United States of America.
Wendy StevensDepartment of Molecular Medicine and Haematology, University of the Witwatersrand, Johannesburg, South Africa.
Vincent HabiyambereDepartment of HIV/AIDS, World Health Organization, Geneva, Switzerland.
Joseph H PerriensDepartment of HIV/AIDS, World Health Organization, Geneva, Switzerland.
Rosanna W PeelingDepartment of Clinical Research, London School of Hygiene & Tropical Medicine, London, United Kingdom.
World Health Organization · CHLondon School of Hygiene & Tropical Medicine · GBBurnet Institute · AUClinton Health Access Initiative · USPangaea Global AIDS Foundation · USRush University Medical Center · USUniversity of North Carolina at Chapel Hill · USUniversity of the Witwatersrand · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDried blood spots (DBS) have been used as alternative specimens to plasma to increase access to HIV viral load (VL) monitoring and early infant diagnosis (EID) in remote settings. We systematically reviewed evidence on the performance of DBS compared to plasma for VL monitoring and EID. METHODS AND

findingsThirteen peer reviewed HIV VL publications and five HIV EID papers were included. Depending on the technology and the viral load distribution in the study population, the percentage of DBS samples that are within 0.5 log of VL in plasma ranged from 52-100%. Because the input sample volume is much smaller in a blood spot, there is a risk of false negatives with DBS. Sensitivity of DBS VL was found to be 78-100% compared to plasma at VL below 1000 copies/ml, but this increased to 100% at a threshold of 5000 copies/ml. Unlike a plasma VL test which measures only cell free HIV RNA, a DBS VL also measures proviral DNA as well as cell-associated RNA, potentially leading to false positive results when using DBS. The systematic review showed that specificity was close to 100% at DBS VL above 5000 copies/ml, and this threshold would be the most reliable for predicting true virologic failure using DBS. For early infant diagnosis, DBS has a sensitivity of 100% compared to fresh whole blood or plasma in all studies.

conclusionsAlthough limited data are available for EID, DBS offer a highly sensitive and specific sampling strategy to make viral load monitoring and early infant diagnosis more accessible in remote settings. A standardized approach for sampling, storing, and processing DBS samples would be essential to allow successful implementation.

trial registrationPROSPERO Registration #: CRD42013003621.

Indexed as

Early DiagnosisViral LoadDried Blood Spot TestingHIV-1HIV InfectionsHumansInfantReproducibility of ResultsSensitivity and Specificity

Identifiers

PMID24603442
PMCPMC3945725
OpenAlexW2147275987

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.