Clinical Insights

INDIAN JOURNAL OF HEMATOLOGY & BLOOD TRANSFUSION• April 5, 2025

This prospective study of 470 patients compared the performance of two point-of-care tests for hemoglobin S detection against high-performance liquid chromatography (HPLC). Gazelle™ demonstrated 100% sensitivity for identifying homozygous sickle cell disease and 98.4% sensitivity for sickle cell trait, with strong agreement to HPLC for quantitative hemoglobin S measurements. The authors concluded that Gazelle provides accurate, rapid, and interpretable results suitable for point-of-care screening in high-prevalence settings.

THE LANCET SOUTHEAST ASIA • April 2025

This international, multicentre study evaluated the diagnostic performance of six low-cost point-of-care tests for detecting sickle cell disease (SCD) and β-thalassemia traits in blood samples from Nepal and Canada, using HPLC as the reference standard. Four tests (HemoTypeSC, Sickle SCAN, Gazelle, and an automated sickling test) accurately identified severe SCD forms, but only Gazelle and the automated sickling test reliably detected both sickle cell trait and β-thalassemia carrier states.

FORTUNE JOURNALS • February 1, 2023

This real-world observational study evaluated fetal hemoglobin (HbF) levels in 114 patients with sickle cell disease receiving hydroxyurea therapy in an endemic region of India. Point-of-care hemoglobin electrophoresis showed that most patients achieved clinically meaningful increases in HbF, frequently exceeding 20%, despite fixed-dose treatment and limited follow-up. The findings underscore the importance of accessible hemoglobin fraction measurement to support therapeutic monitoring in routine clinical practice.

BIOSENSORS • February 5, 2024

In this clinical study conducted among 404 subjects in Ghatkopar, Mumbai, India, Gazelle demonstrated 100% sensitivity and specificity for identifying β-Thal major/intermedia vs. healthy subjects as well as subjects with β-Thal major/intermedia vs. β-Thal trait. Additionally, Gazelle demonstrated 100% sensitivity and 98.3% specificity for identifying β-Thal trait vs. healthy subjects.

HELIYON • December 6, 2022

In this clinical study conducted among 441 subjects including 250 subjects from 0 to 3 days old, 15 subjects from 4 to 28 days old, and 176 subjects from 28 days to 6 months old in Korle Bu, Ghana, Gazelle-Multispectral demonstrated 100% sensitivity and specificity for identifying newborns with diseases vs. healthy subjects; and subjects with disease vs. subjects with sickle cell trait and Hb C trait; Additionally, Gazelle-Multispectral demonstrated 97.3% sensitivity and 96.6% specificity for identifying subjects with sickle cell trait and Hb C trait vs. healthy subjects.

FRONTIERS IN MEDICINE • December 10, 2021

In this study, Gazelle, a new point-of-care, microchip-electrophoresis based sickle diagnostic device was compared to conventional laboratory-based hemoglobin electrophoresis and HPLC. The sensitivity and specificity of the Gazelle is comparable to hemoglobin electrophoresis and HPLC and eliminates the need for a laboratory. Gazelle yielded an overall high accuracy (99.0%) compared to reference standard tests (HPLC and hemoglobin electrophoresis).

LAB ON A CHIP • October 21, 2021

This article describes the first point-of-care (POC) platform to perform both anemia detection and Hb variant identification, using a single paper-based electrophoresis test.

ANALYST • April 30, 2020

HemeChip is a versatile, mass-producible microchip electrophoresis platform technology that may address unmet needs in biology and medicine, when rapid, decentralized hemoglobin or protein analysis is needed.