taking hormone tests at random times
An afternoon cortisol reading or a day-14 FSH draw produces numbers that look meaningful and are not. Hormones follow daily and monthly rhythms, so book the draw for the hour and cycle day your doctor specifies. Getting the timing right is precisely what home collection makes easy — use that advantage.
using an IgG panel to rule out a real allergy
If you suspect a true allergy — swelling, hives, breathing trouble — an IgG food intolerance panel is the wrong tool and a clear result from one proves nothing. True allergy is IgE-mediated and needs proper testing and a doctor. Confusing the two can leave a dangerous allergy undetected.
switching laboratories between follow-up tests
Reference ranges and assay methods differ between labs, so a borderline thyroid or cholesterol value retested somewhere new may move for reasons that have nothing to do with your health. For trend-watching, stick with one laboratory — rebooking the same vendor keeps your numbers comparable year to year.