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Learn how in-house drug testing with rapid urine drug test cups can reduce costs vs lab testing, plus what to do with presumptive positives. Introduction: Is There a Cheaper Alternative to Lab Drug Testing? Many organizations rely on lab testing for urine drug screens, but the cost and turnaround time can quickly become a burden—especially for high-volume testing programs. If you're currently sending every sample to a lab, you may be overlooking a more efficient solution. In-

What Is a Faint Line on a Drug Test? A faint line occurs when the test line (T line) on a drug test strip appears lighter than the control line (C line). Here’s the key point: Any visible line—no matter how faint—in the test region should be interpreted as a NEGATIVE result. This applies to most immunoassay drug tests, including: Urine drug tests Saliva drug tests Multi-panel drug test cups Important: Line intensity does NOT matter Line thickness does NOT matter Faint = still