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EVALUATION STUDY
JOURNAL ARTICLE
Sickle SCAN™ (BioMedomics) fulfills analytical conditions for neonatal screening of sickle cell disease.
Annales de Biologie Clinique 2018 August 2
Sickle SCAN™ is a rapid, qualitative, point-of-care lateral flow immunoassay for the identification of AS, AC, SS/Sβ0 thal, SC and CC/Cβ0 thal phenotype. We evaluated this test under the conditions encountered in the French newborn screening (NBS) program for sickle cell disease: a total of 104 dried blood spots (DBSs) were tested with an HPLC reference method and then with the Sickle SCAN™ device. Sickle SCAN™ identified the hemoglobin (Hb) phenotype correctly on 96% of cases. In the four non-concordant cases, the antibody anti-HbS cross-reacted with HbE (n=2), HbD (n=1) or HbX (n=1). There were no false negative. In order to test Sickle SCAN™'s sensitivity to low levels of HbA and HbS in the presence of high HbF levels, we selected another 21 DBS cards with low percentages of HbA (0.6-4.2%) and HbS (2.0-6.9%). HbA and HbS were always detected when present at levels of more than 1% and 2%, respectively. Sickle SCAN™ appears to be an accurate point-of-care method for the identification of newborns with SCD trait. The device meets the criteria for sickle cell disease NBS programs in endemic countries with poor access to laboratory equipment.
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