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Assessment of the accuracy of a new test for COVID-19

Validation of a real-time SARS-CoV-2 loop-mediated isothermal amplification assay in Blantyre, Malawi (SARS_LAMP)

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ISRCTN
Registry ID
ISRCTN29409638
Enrollment
600
Registered
2022-02-17
Start date
2021-09-28
Completion date
Unknown
Last updated
2022-03-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19 (SARS-CoV-2 infection) Infections and Infestations

Interventions

This study will be conducted at the Kamuzu University of Health Sciences (KUHes), Blantyre campus. Standard methods will be used to evaluate diagnostic test accuracy. The gold standard is RT-PCR. The

Sponsors

Fogarty International Center
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Patients presenting with symptoms suggestive of COVID-19 will be offered SARS-CoV-2 LAMP assay testing and those participants /caregivers who give consent will be entered into the study. 1. COVID-19 patients: adults and children of any age presenting with COVID-19 symptoms which include: 1.1. Temperature =38.0°C measured at presentation or reported within the previous 24 hours AND one of the below 1.2. Cough 1.3. Abnormal sounds on chest auscultation (crackles, reduced breath sounds, bronchial breathing, wheezing) 1.4. Clinical signs of dyspnea (chest indrawing, nasal flaring, grunting) 1.5. Signs of respiratory dysfunction: tachypnoea for age or decreased oxygen saturation (<92% in room air) 1.6. Signs of reduced general state: poor feeding, vomiting or lethargy/drowsiness 1.7. Loss of taste/smell preceding respiratory symptoms 1.8. Sore throat, nasal congestion, myalgia, fatigue 2. Asymptomatic contacts of COVID-19 patients

Exclusion criteria

Exclusion criteria: 1. Inability to obtain informed consent 2. Alternative non-infectious diagnosis that explains clinical symptoms

Design outcomes

Primary

MeasureTime frame
Calculated using a 2 by 2 table (LAMP assay versus PCR) at a single timepoint (day of recruitment): 1. Sensitivity 2. Specificity

Secondary

MeasureTime frame
Measured at a single timepoint (day of recruitment) 1. Turn-around time (TAT) calculated from sample collection to the time test results are available 2. Cost per test calculated from all health services costs incurred per test

Countries

Malawi

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026