Athlete Guide to Anti-Doping
USADA is continually updating and expanding its library of resources to ensure that athletes and athlete support personnel can easily access information about some of the most important topics in anti-doping. The directory below can be used to find various articles and materials, organized by category, from across the USADA website.
More questions?
For questions about testing, contact USADA’s Athlete Services Team at AthleteConnect@USADA.org or call (719) 785-2000.
For questions about specific products, substances, and methods, contact USADA’s Drug Reference Line at drugreference@USADA.org or call (719) 785-2000, option 2.
GENERAL
Testing
- Athlete Biological Passport
- Athlete Connect FAQs and Step-By-Step Guides
- Athlete Responsibilities and Failures to Comply
- Chaperones and their Role in Anti-Doping
- Declaring Medications
- Doping Control Officers (DCO) and What to Expect
- Dried Blood Spot Testing
- Important Questions to Ask During Testing
- InnoVero Sample Collection Equipment
- Pre-Competition Anti-Doping Checklist
- Recreational Athlete Checklist
- Registered Testing Pool
- Sample Collection
- Sitting Before Blood Sample Collection
- Testing Modifications
- Testing Selection Process
- Urine Sample Collection – 90 mL
- Whereabouts
- Whereabouts Failures
Supplements
- 5-Alpha-Hydroxy-Laxogenin
- All-Natural Supplements
- Calcium Supplements
- Caffeine
- Common Misconceptions about Supplements
- Compounding Pharmacies
- Creatine
- Energy Drinks
- Fish Oil Supplements
- Food v. Supplements
- Half-Life of a Drug
- High-Risk Supplements
- Ketones
- Low-Risk Supplements
- Magic Mushrooms
- Medications v. Supplements
- Melatonin
- Nitric Oxide
- NSF Certified for Sport Supplements
- Poppy Seeds
- Retesting Samples
- Screen your Supplements
- Supplements – Clean Sport Red Flag
- Supplement Legislation
- Supplement Myths
- Supplement Use – 3 Things to Know
- TUEs – 3 Things to Know
- Vitamin C Supplements
The Prohibited List – Substances and Methods
Non-Approved Substances
Anabolic Agents
- Anabolic Androgenic Steroids (AAS)
- Other Anabolic Agents
- Hypoxia-Inducible Factor (HIF) Activating Agents
- Erythropoieten (EPO)
- Insulin-like Growth Factor-1 (IGF-1)
- Peptide Hormones and their Releasing Factors
Beta-2 Agonists
Hormone and Metabolic Modulators
- Aromatase Inhibitors
- SERMs
- Metabolic Modulators
Diuretics and Masking Agents
Narcotics
Chemical and Physical Manipulation
Gene and Cell Doping
Latest articles
Athlete Advisory: What’s New on the 2025 WADA Prohibited List?
The 2025 WADA Prohibited List does include new examples of prohibited substances and a few clarifications.
Athlete Advisory: Always Verify Third-Party Certified Logos on Dietary Supplements
Third-party certification logos on dietary supplement labels are being misused, and you can’t rely only on the presence of third-party certification logos.
What Athletes Need to Know About Exosomes
Answers to some commonly asked questions about therapies involving extracellular vesicles, such as stem cell exosomes.
Research Chemicals: A Worrying Trend Putting Athletes at Risk
What are research chemicals or products advertised as “not for human consumption”, and how are they a risk for drug tested athletes?
What is the MOTS-c peptide?
Athletes should be wary of experimental peptides, including the prohibited MOTS-c, which can be found on websites with the label “for research purposes only.”
Can Hemp Products Cause a Positive Anti-Doping Test?
Here’s what athletes need to know about hemp products and the risk of testing positive from those products.