Testing the day after leg day
Hard training before a draw inflates creatine kinase, can bump ALT, AST and creatinine, and produces a panel that looks like organ trouble instead of a workout. Take one or two rest days before any panel that includes liver, kidney or muscle markers, and note recent training on the booking.
Hopping between labs and comparing the numbers
Different laboratories use different assay methods and reference ranges, so a small shift between two labs may be methodology, not biology. For anything you track over time — HbA1c, lipids, thyroid, ferritin — keep the same vendor and lab, and let the trend do the talking.
Treating results as a diagnosis
A PDF with reference ranges is data, not medical advice, and the phlebotomist who drew you is not licensed to interpret it. Self-prescribing thyroid support, testosterone boosters or iron off the back of a self-ordered panel is genuinely risky. Abnormal results earn a conversation with a DHA- or DoH-licensed doctor — that is the whole system working as designed.