Product Classification
CLIA Waived
Designed for point-of-care testing. Reviewed by the FDA and determined simple enough to use with very low risk of incorrect results when instructions are followed.
- Physician offices
- Occupational health clinics
- Urgent care centers
- Hospitals and CLIA-certified facilities
Best for: clinical and patient-care environments.
510(k) Cleared
The manufacturer has demonstrated to the FDA that the device is substantially equivalent to another legally marketed device. Not the same as CLIA Waived — a product may be 510(k) only, or both.
Best for: employers, TPAs, occupational health programs and workplace testing.
Employment & Insurance (E&I)
Non-clinical workplace testing. Same validation standards as 510(k) tests, but based on an existing 510(k) predicate so no pre-market notification is required.
- Pre-employment and random testing
- Post-accident and reasonable suspicion
- Return-to-duty and follow-up
- Insurance-related screening
Best for: administrative and employment decisions, not patient care.
Forensic Use Only (FUO)
For situations where results support legal, judicial or administrative decisions rather than medical diagnosis.
- Court-ordered testing
- Criminal justice, probation and parole
- Law enforcement
- Family and custody cases
IUO / RUO
Investigational Use Only and Research Use Only products cannot be used for workplace testing or clinical decisions. RUO is for laboratory research; IUO covers clinical performance, method-comparison and validation studies. Uncommon in the drug testing market.
A Common Misconception
People often assume a CLIA Waived or 510(k) test is “better” than an E&I test. In reality the designations serve different intended uses. Choosing the right one depends on how the test will be used — not which is more accurate.
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Product Classification Explained
CLIA Waived, 510(k), E&I, FUO, RUO and IUO
Have you ever wondered what terms like CLIA Waived, 510(k), E&I or FUO actually mean when purchasing a drug test?
These regulatory designations are often misunderstood, but they play an important role in determining where a test can be used, who can use it, and for what purpose. Here’s a quick guide to the terminology.
At a Glance
- CLIA Waived — clinical healthcare settings and patient care
- 510(k) — FDA pre-market notification; workplace and insurance screening
- E&I — workplace and insurance screening via a 510(k) predicate
- FUO — legal, judicial and administrative programs
- IUO / RUO — research and evaluation only
Choosing the Right Test
Choosing the correct drug test doesn’t have to be complicated. Our team can help you select the right solution based on your application, regulatory requirements and testing environment — and ask for our handy reference guide.