| Acamprosate | Central Nervous System Agents | LCMSMS | 0.5-200 ng/mL | Human EDTA Plasma |
| Aceclofenac | Pain | LC/MS/MS | 15-15000 ng/mL | Human EDTA Plasma |
| Acetaminophen | Pain | LC/MS/MS | 0.15-15 µg/mL | Human EDTA Plasma |
| Acetaminophen | Pain | LC/MS/MS | 100-10000 ng/mL | Human EDTA Plasma |
| Acetyl salicylic acid; salicylic acid | Pain | LC/MS/MS | 5-1500 ng/mL; 75-7500 ng/mL | Human EDTA Plasma |
| Acetylsalicylic Acid | Pain | LC/MS/MS | 2-300 ng/mL | Buffered Human EDTA Plasma |
| Acyclovir | Infectious Disease | LC/MS/MS | 0.5-40 ng/ml | Human Urine |
| Acyclovir | Infectious Disease | LC/MS/MS | 0.5-40000 pg/mL | Human EDTA Plasma |
| Adefovir | Infectious Disease | LC/MS/MS | 0.1-50 ng/mL | Human EDTA Plasma |
| Alendronic Acid | Endocrinology, Rheumatology | HPLC/FLR | 5-1500 ng/mL | Human Urine |
| Alendronic Acid | Endocrinology, Rheumatology | HPLC/FLR | 5-500 ng/mL | Monkey Urine |
| Alendronic Acid | Endocrinology, Rheumatology | LC/MS/MS | 50-50000 pg/mL | Human Plasma |
| Alfuzosin | Genitourinary | HPLC/FLR | 0.2-100 ng/mL | Human EDTA Plasma |
| Aliskiren | Cardiovascular | LC/MS/MS | 1-500 ng/mL | Human EDTA Plasma |
| Allopurinol; Oxypurinol | Antigout Drugs | LC/MS | 50-2000 ng/mL ;100-10000 ng/mL | Human EDTA Plasma |
| Allopurinol; Oxypurinol | Antigout Drugs | LC/MS/MS | 40-10000 ng/mL; 1-200 µg/mL | Human Urine |
| Alprazolam | Central Nervous System Agents | LC/MS/MS | 0.25-50 ng/mL | Human EDTA Plasma |
| Alvimopan;ADL 08-0011 | Gastrointesninal | LC/MS/MS | 100-20000 pg/mL; 0.5-100 ng/mL | Human EDTA Plasma |
| Amiodarone; Desethylamiodarone | Cardiovascular | LC/MS/MS | 10-25000 ng/mL; 0.5-200 ng/mL | Human EDTA Plasma |
| Amiodarone;Desethylamiodarone | Cardiovascular | LC/MS/MS | 100-4000 ng/mL | Human Sodium Heparinized Plasma |
| Amisulpride | Central Nervous System Agents | LC/MS/MS | 1-500 ng/mL | Human Plasma |
| Amlodipine | Cardiovascular | LC/MS/MS | 20-10000 pg/mL | Human Lithium Heparinized Plasma |
| Amlodipine | Cardiovascular | LC/MS/MS | 50-10000 pg/mL | Human EDTA Plasma |
| Amoxicillin | Infectious Disease | LC/MS/MS | 40-20000 ng/mL | Human EDTA Plasma |
| Amoxicillin | Infectious Disease | LC/MS/MS | 40-12000 ng/mL | Human EDTA K3 Plasma |
| Amphetamine (chiral method) | Central Nervous System Agents | LC/MS/MS | 0.2-100 ng/mL | Human EDTA Plasma |
| Anagrelide | Cardiovascular | LC/MS/MS | 20-5000 pg/mL | Human EDTA Plasma |
| Anastrozole | Oncology | LC/MS/MS | 100-20000 pg/mL | Human EDTA Plasma |
| Androstenedione | Endocrinology | GC/MS/MS | 25-2500 pg/mL | Human Serum |
| Androstenedione | Endocrinology | GC/MS/MS | 25-2500 pg/mL | Human Heparin Plasma |
| Apomorphine | Central Nervous System Agents | LC/MS/MS | 0.25-50 ng/mL | Human Plasma |
| Aprepitant | Gastrointestinal | LC/MS/MS | 20-2000 ng/mL | Human Plasma |
| Aripiprazole | Central Nervous System Agents | LC/MS/MS | 0.50-100 ng/mL | Human EDTA Plasma |
| Armodafinil | Central Nervous System Agents | LC/MS/MS | 20-10000 ng/mL | Human EDTA Plasma |
| Atazanavir | Infectious Disease | LC/MS/MS | 2-2000 ng/mL | Human Plasma |
| Atenolol | Cardiovascular | LC/MS | 5-1000 ng/mL | Human Sodium Heparinized Plasma |
| Atomoxetine | Central Nervous System Agents | LC/MS/MS | 2-500 ng/mL | Human Plasma |
| Atorvastatin lactones | Cardiovascular | LC/MS/MS | 10-10000 pg/mL, 10-5000 pg/mL, 50-50000 pg/mL | Human Plasma |
| Atorvastatin; o-Hydroxy-Atorvastatin; p-Hydroxy-Atorvastatin | Cardiovascular | LC/MS/MS | 0.25-100 ng/mL ; 0.25-20 ng/mL ; 0.25-100 ng/mL | Human Sodium Heparin Plasma |
| Atorvastatin; o-Hydroxy-Atorvastatin; p-Hydroxy-Atorvastatin | Cardiovascular | LC/MS/MS | 50-50000 pg/mL; 50-50000 pg/mL; 50-5000 pg/mL | Human EDTA Plasma |
| Atovaquone | Infectious Disease | LC/MS/MS | 50-25000 ng/mL | Human EDTA Plasma |
| Azithromycin | Infectious Disease | LC/MS/MS | 10-1000 ng/mL | Human EDTA K3 Plasma |
| Azithromycin | Infectious Disease | LC/MS/MS | 50-500 ng/mL | Human EDTA K3 Plasma |