Alternative Names for RADT
RADT (Rapid Antigen Detection Test) is commonly referred to as "rapid strep test" or simply "strep test" in clinical practice.
Common Terminology
The term RADT encompasses several alternative names used interchangeably in medical settings:
- Rapid strep test - the most common colloquial term used by clinicians and patients
- Rapid antigen test - shortened version emphasizing the antigen detection methodology
- Quick strep test - informal terminology
- Strep A rapid test - specifying the target organism (Group A Streptococcus)
Technical Variations
Different RADT methodologies are referenced by their specific techniques 1, 2:
- Latex agglutination tests - first-generation RADTs (now largely obsolete due to lower sensitivity)
- EIA (Enzyme Immunoassay) tests - newer generation with improved sensitivity and sharper endpoints
- Optical immunoassay - advanced methodology with potentially higher sensitivity
- Chemiluminescent DNA probe tests - molecular-based rapid detection
Clinical Context
The key distinction is that RADT refers specifically to point-of-care testing that provides results within 5-10 minutes, as opposed to traditional throat culture on blood agar plates which requires overnight incubation 1, 2, 3.
When ordering or documenting, you may see:
- "Strep RADT"
- "GAS rapid antigen test" (GAS = Group A Streptococcus)
- "Rapid strep screen"
- Commercial kit names (e.g., QuickVue Strep A, BD Veritor, careUS Strep A Plus) 4, 5
Important caveat: While "rapid test" is universally understood, always specify "antigen" detection when documenting to distinguish from rapid molecular/PCR tests, which are a different category of diagnostics with different performance characteristics 3, 6.