🧬 One-Time Genetic Risk Panel

What this panel can settle, and by what logic

Genotype does not change, so the honest frame is a permanent record bought once. Two of the five results are genuinely worth having.

1. HFE genotyping is the most useful test on the panel, because it is actionable and the disease is treatable before it does damage. It only means something read with iron studies: transferrin saturation rises before ferritin does, and the genotype and the biochemistry together are what identify who is actually loading iron Sandnes 2021. Clinical guidance uses the same combination Crawford 2023.
2. APOE Genotyping answers a risk question no lifestyle history can. In people carrying two copies of e4, abnormal amyloid biomarkers were near-universal by 65 and 75% had a positive amyloid scan, which is why that genotype is now argued to be a distinct genetic form of Alzheimer disease rather than a risk factor Fortea 2024.
3. Factor V Leiden explains a family history rather than predicting your future. It is the commonest inherited thrombophilia in people of European ancestry, and it is a partial explanation for a clustering of clots in relatives — but see what it cannot do below Middeldorp 2023.
4. Nothing here needs repeating, and that is the value proposition. No fasting, no timing, no retest, ever.

What it cannot settle, and what would

MTHFR, DNA Analysis should not be on this panel at all. The American College of Medical Genetics and Genomics published a practice guideline titled for its conclusion — a lack of evidence for MTHFR polymorphism testing — and recommends against ordering it in the evaluation of thrombophilia or recurrent pregnancy loss Hickey 2013. If methylation worries you, the informative test is Homocysteine, which measures the phenotype instead of a variant that may not express one.

Factor V Leiden rarely changes what anyone does. The ASH 2023 thrombophilia guidelines run to 23 recommendations about when testing is and is not appropriate, and the recurring answer is that a positive result does not by itself determine how long anticoagulation continues after a clot Middeldorp 2023. A positive result in a person who has never had a thrombosis mostly buys worry.

A genotype is a probability, never a prophecy, and HFE is the clearest example. Most people homozygous for C282Y never develop clinically significant iron overload, which is why the genotype is read against transferrin saturation and Ferritin rather than treated on its own Sandnes 2021 Cancado 2025.

And the single most useful inherited cardiovascular test is not on this panel. Lp(a) is around 90% genetically determined, needs measuring once in a lifetime, and changes how aggressively everything else is treated Nurmohamed 2023. Nor does this panel contain any hereditary cancer gene — BRCA1, BRCA2 and the Lynch syndrome genes are ordered through a genetics service with counseling, and a consumer raw-data interpretation is not a diagnosis.

Draw conditions that decide whether the money is wasted

The easiest draw on the site, with three caveats that are about consequences rather than about biology.

1. No fasting, no time of day, no cycle day, no supplement washout. Nothing you did this week can move a genotype, so the usual preparation rules do not apply.
2. Declare a recent blood transfusion or any stem-cell transplant. Genotyping from blood reads the DNA in circulating leukocytes, so donor cells can produce a result that is not yours. Wait at least 3 months after a transfusion, or ask for a buccal sample.
3. Decide before you order, not after, who else this result belongs to. APOE Genotyping and Hereditary Hemochromatosis, DNA have implications for siblings and children Fortea 2024 Crawford 2023, and an APOE Genotyping result cannot be unlearned once it is in a record you may later have to disclose.

How you would know it answered your question, and what each pattern means next

Five results and what each one starts. None of them is a retest of the genotype.

• C282Y homozygous on Hereditary Hemochromatosis, DNA: the one result that sets up lifelong monitoring. Check Ferritin and transferrin saturation annually; a rising ferritin with a saturation above 45% is what triggers treatment, and venesection prevents the organ damage if started early Crawford 2023 Hsu 2022.
• Factor V Leiden heterozygous with no clot history: no anticoagulant, no repeat testing. What changes is situational prophylaxis around surgery, immobility and pregnancy, discussed once with a clinician Middeldorp 2023.
• MTHFR, DNA Analysis variant of any kind: ignore the genotype and measure Homocysteine. If it is above 10 µmol/L, treat the B vitamins and retest at 12 weeks Hickey 2013.
• APOE Genotyping e4/e4: the actionable response is vascular and metabolic — blood pressure, ApoB (Apolipoprotein B), HbA1c (Hemoglobin A1c), hearing, activity, sleep — and a plan for what would change if symptoms ever appeared Fortea 2024.
• Androgen receptor CAG repeat result of any length: there is no validated threshold that changes a testosterone decision, so treat it as interesting rather than clinical.

Sources read for these sections

• Hickey SE, Curry CJ, Toriello HV. ACMG Practice Guideline: lack of evidence for MTHFR polymorphism testing. Genetics in Medicine 2013 · PMID 23288205
• Middeldorp S, et al. American Society of Hematology 2023 Guidelines for Management of Venous Thromboembolism: Thrombophilia Testing. Blood Advances 2023 · PMID 37195076
• Fortea J, et al. APOE4 homozygozity represents a distinct genetic form of Alzheimer's disease. Nature Medicine 2024 · PMID 38710950
• Sandnes M, et al. HFE Genotype, Ferritin Levels and Transferrin Saturation in Patients with Suspected Hereditary Hemochromatosis. Genes (Basel) 2021 · PMID 34440336
• Crawford DHG, et al. Clinical practice guidelines on hemochromatosis: Asian Pacific Association for the Study of the Liver. Hepatology International 2023 · PMID 37067673
• Hsu CC, et al. Iron overload disorders. Hepatology Communications 2022 · PMID 35699322
• Nurmohamed NS, et al. Considerations for routinely testing for high lipoprotein(a). Current Opinion in Lipidology 2023 · PMID 35942815
• Cancado RD. Defining Global Thresholds for Serum Ferritin: A Challenging Mission in Establishing the Iron Deficiency Diagnosis in This Era of Striving for Health Equity. Diagnostics (Basel) 2025 · PMID 39941219