If you’ve ever taken a drug test or ordered one for an employee, you’ve probably heard the terms “screening” and “confirmation.” While they may sound similar, these two steps in drug testing serve different but equally important purposes.
At Test Smartly Labs Kansas City, we provide both drug test screenings and confirmations so you can feel confident in the accuracy of every result.
What Is a Drug Test Screening?
A drug screening is the initial test performed on a specimen (such as urine, saliva, blood, hair, or nails) to check for the possible presence of drugs.
- Purpose: Detects whether certain substances might be present.
- Method: Often performed using immunoassay techniques, which are fast and cost-effective.
- Turnaround Time: Usually same-day or within 1–2 business days.
- Result: Reported as either negative (no drugs detected) or non-negative (a drug may be present and needs further testing).
Key Benefit of Screening
Screenings are quick and inexpensive, ideal for pre-employment, random workplace testing, or routine checks.
What Is a Confirmation Test?
If a screening test comes back non-negative, a confirmation test is performed.
- Purpose: Determines the specimen’s exact drug, amount, and concentration.
- Method: Uses advanced technology such as GC/MS (Gas Chromatography-Mass Spectrometry) or LC/MS/MS (Liquid Chromatography-Mass Spectrometry).
- Turnaround Time: Usually 2–5 business days.
- Result: A definitive, legally defensible result identifying the substance beyond doubt.
Key Benefit of Confirmation
Confirmation eliminates false positives caused by medications, food substances, or supplements that may mimic drug markers in screenings.
Screening vs. Confirmation: Side-by-Side
| Feature | Screening | Confirmation |
| Purpose | Initial check for drugs | Definitive identification of drugs |
| Method | Immunoassay (fast, broad) | GC/MS or LC/MS/MS (precise, detailed) |
| Cost | Lower | Higher |
| Turnaround | 1–2 days | 2–5 days |
| Use Case | Pre-employment, random tests | Legal, court, DOT, disputed results |
| Result | Negative or non-negative | Exact substance + concentration |
Why Both Steps Are Important
- Screening catches potential drug use quickly and affordably.
- Confirmation provides accuracy and legal defensibility when the stakes are high.
For example:
- An employer ordering DOT drug testing requires confirmation for any non-negative results before taking disciplinary action.
- An individual with a prescription medication may need a confirmation test to prove a screening false positive.
Test Smartly Labs: Your Partner in Reliable Testing
At Test Smartly Labs Kansas City, we follow strict chain-of-custody procedures and partner with certified labs that use gold-standard confirmation methods when needed.
Whether you’re testing for employment, court, DOT compliance, or personal reasons, we ensure:
- Fast initial screenings for quick answers.
- Accurate confirmations for disputed or legally sensitive results.
- Confidential and secure handling of all specimens.
When Should You Request Confirmation Testing?
- Employment decisions (especially for DOT or safety-sensitive roles).
- Court-ordered or legal cases.
- Prescription overlap, when legal medications could cause a false positive.
- Any time accuracy is essential.
Kansas City’s Trusted Testing Partner
If you want Kansas City drug test screenings and confirmations, turn to Test Smartly Labs. We’ll walk you through the process, explain your options, and ensure you get reliable results every time.
Call today at 816-777-2977 or walk into one of our Kansas City metro locations.
