Built-in Quality Control A solid line appearing in the Control Area of the Result Window indicates that several of the built-in control features for the InSTIcheck™ Chlamydia test are working. Because the method of processing the built-in control and detecting features are identical, the appearance of a line in the Control Area ensures that the device’s functionality is preserved.

In addition, the Control Area line is a sign that the seal on the foil storage pouch has not been breached and that the device has been protected from outside contaminants. Because capillary flow can not be accomplished without a properly assembled device and the correct volume of fluid, the appearance of a line in the Control Area also means that the device’s components are accurately positioned and linked correctly and that the assay has been performed properly.

Finally, if the Control Area line does not develop within 15 minutes, the test result should be considered invalid.