Chagas lgG/IgM Rapid Test

INTENDED USE

The Chagas IgG/IgM Rapid Test is a rapid chromatographic immunoassay for the qualitative detection of IgG and IgM antibodies to Trypanosoma cruzi in human whole blood, serum or plasma specimen. .

INTRODUCTION

Chagas disease is an insect-borne, zoonotic infection by the protozoan T. cruzi, which causes a systemic infection of humans with acute manifestations and long term sequelae. It is estimated that 16-18 million individuals are infected worldwide, and roughly 50,000 people die each year from chronic Chagas disease (World Health Organization). Buffy coat examination and xenodiagnosis used to be the most commonly methods in the diagnosis of acute T. cruzi infection. However, both methods are either time consuming or lack of sensitivity. Recently, serological test becomes the mainstay in the diagnosis of Chagas’s disease. In particularly, recombinant antigen based tests eliminate false-positive reactions which are commonly seen in the native antigen tests.

The Chagas IgG/IgM Rapid Test is a rapid test that utilizes a combination of Chagas antigen coated colored particles for the detection of IgG and IgM to  T. cruzi antibodies in human whole blood, serum, or plasma.

PROCEDURE

Allow the test device, specimen, buffer, and/or controls to reach room temperature (1530°C) prior to testing.

1. Bring the pouch to room temperature before opening. Remove the test device from the sealed pouch and use it as soon as possible.
2. Place the test device on a clean and level surface.

For Serum or Plasma Specimens: 

Hold the dropper vertically, draw the specimen up to the Fill Line (approximately 10 uL), and transfer the specimen to the specimen well (S) of the test device, then add 2 drops of buffer (approximately 80 mL) and start the timer. See illustration below. Avoid trapping air bubbles in the specimen well (S).

For Whole Blood (Venipuncture/Fingerstick) Specimens:

To use a dropper: Hold the dropper vertically, draw the specimen 0.5-1 cm above the Fill Line, and transfer 2 drops of whole blood (approximately 20 µL) to the specimen well (S) of the test device, then add 2 drops of buffer (approximately 80 uL) and start the timer. See illustration below.

To use a micropipette: Pipette and dispense 20 µL of whole blood to the specimen well (S) of the test device, then add 2 drops of buffer (approximately 80 µL) and start the timer.

3. Wait for the colored line(s) to appear. Read results at 10 minutes.Do not interpret the result after 20 minutes.

INTERPRETATION OF RESULTS