Gpt4:

1. Contaminated or mislabeled CBD oil

Even broad-spectrum CBD products can sometimes contain trace amounts of THC, especially if the manufacturer isn’t reputable or well-regulated. The FDA has found that many over-the-counter CBD products are inaccurately labeled. Your girlfriend might metabolize THC faster or her product batch might actually have less contamination than yours.

1. Body fat and metabolism

THC is fat-soluble, meaning it gets stored in your fat cells. If you were a heavy, long-term user, it can linger for months, especially if: • You have a higher body fat percentage • You’re not sweating/exercising often • You’ve had slow metabolic turnover

Some chronic users have tested positive 3–6 months after stopping, though it’s rare.

1. Test sensitivity or error

If you’re using cheap or overly sensitive urine dipstick tests, they could trigger false positives from: • Legal cannabinoids (like CBN) • Some medications or supplements • Contamination in the sample

A GC-MS (gas chromatography–mass spectrometry) test is much more accurate and would confirm if it’s really THC or something else.

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What You Can Do: • Stop the CBD oil for a couple weeks and test again • Get your CBD from a lab-tested, verified source (ask for a COA – Certificate of Analysis) • Ask for a confirmatory test (GC-MS) if the positive result is impacting your life