Rapid Visual Tests
Rapid Visual Tests or Lateral Flow Assays (also known as immunochromatographic assays) are used to rapidly diagnosis a wide variety of medical conditions. Quidel has been a leader in the development and production of high quality lateral flow diagnostics since the early 1990’s. We offer a broad portfolio of rapid lateral flow assays that can be interpreted either visually (QuickVue) or with the aid of an Instrument (Sofia). The principle of Quidel’s Lateral Flow Assay utilizes a sandwich design to detect a specific analyte in the test specimen. Which means the analyte is bound between two components, i.e. antibody – antigen – antibody; or antigen – antibody – antibody (bold indicates target analyte). Each of Quidel’s Lateral Flow Assays contains an on board quality control to indicate that the test has run properly.
Quidel’s Lateral Flow Assays are made up of four components:
- Sample Pad
- Conjugate Pad
- Capture Membrane
- Absorbent Pad
The test specimen is added to the Sample Pad, where it may be conditioned for the specific assay. The sample then migrates through the Conjugate Pad; if the target analyte is present, it will bind to test micro-particles. As the sample flows through the Capture Membrane the micro-particles bound to the test analyte will bind in the Test Location (depicted above by the red line). If the test runs properly, a line will develop on the Control Line (depicted above by the blue line).
Dipstick
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Dipstick immunoassay for the rapid qualitative detection of Group A Streptococcal antigen from throat swab specimens.
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The QuickVue Influenza A+B Test detects and differentiates influenza type A and type B antigens directly from nasal swab and nasopharyngeal swab specimens...
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A dipstick immunoassay which allows for the rapid, qualitative detection of respiratory syncytial virus (RSV) antigen (viral fusion protein) directly from...
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A dipstick immunoassay for the qualitative detection of Respiratory Syncytial Virus from nasopharyngeal swab or nasopharyngeal aspirate/wash specimens.
Cassette
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A rapid result, in-office test that detects elevated levels of MMP-9, an inflammatory marker that is consistently elevated in the tears of patients with dry...
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Immunoassay for the direct qualitative detection of Chlamydia trachomatis antigen from endocervical swab or cytology brush specimens.
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Immunoassay for the rapid qualitative detection of lgG antibodies specific to Helicobacter pylori.
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Immunoassay for the qualitative detection of human chorionic gonadotropin (hCG) in serum or urine for the early detection of pregnancy.
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The QuickVue hCG Urine test is a sensitive immunoassay for the qualitative detection of human chorionic gonadotropin (hCG) in urine for the early detection...
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A Fecal Immunochemical Test or (FIT) Immunochemical device intended for the qualitative detection of fecal occult blood.
Acute Conjunctivitis
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The only CLIA-waived, point-of-care test that detects all known serotypes of adenoviral conjunctivitis directly from human eye fluid.
In-Line Cassette
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The QuickVue In-Line Strep A Test uses a unique in-line extraction to detect group A streptococcal antigen directly from patient throat swab specimens.
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The QuickVue SARS Antigen Test detects SARS-CoV-2 antigens directly from anterior nares swab specimens.
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The QuickVue TLI Campylobacter Test is a rapid membrane enzyme-linked immunosorbent assay for the qualitative detection of a Campylobacter-specific antigen...
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The QuickVue TLI H. pylori Stool Antigen Test is a rapid membrane enzyme immunoassay for the qualitative detection of Helicobacter pylori specific...
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The QuickVue TLI Lactoferrin Test is an immunochromatographic test for the qualitative detection of elevated levels of lactoferrin, a marker for fecal...
Plus/Minus Cassette
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The QuickVue+ hCG Combo test is a sensitive immunoassay for the qualitative detection of human chorionic gonadotropin (hCG) in...
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The QuickVue+ Strep A Test detects group A streptococcal antigen directly from throat swabs and beta-hemolytic colonies on blood agar plates.