| Abbreviation | Definition |
|---|---|
| AFLR | Area Fixed Length Record |
| AFML | Advanced Functional Materials Laboratory |
| AFP | Alpha-FetoProtein |
| AFP | Always False Positive |
| AFR | Aqueous Flare Response |
| AFRL | Air Force Research Laboratory |
| AFRL | Autonomous Field Robotics Laboratory |
| AFTC | Apparent Free Testosterone Concentration |
| AG | Anion Gap |
| AGC | Active Group Count |
| AGE | Average Growth Exponent |
| AGES | Advanced Glycation End Substance |
| AGID | agar gel immunodiffusion |
| AGILE | Association of Geographic Information Laboratories in Europe |
| AGL | American Gemological Laboratories |
| AGL | Applied Geodynamics Laboratory |
| AGSL | American Gem Society Laboratories |
| AGSL | American Gem Society Laboratory |
| AGSL | Authentic Gem Security Laboratory |
| AGT | Accelerated Growth Technique |