Hemochromatosis : HFE Targeted Analysis

Test Information

HFE targeted analysis is a molecular test used to identify the common C282Y and H63D variants in the gene associated with Hemochromatosis.

Turnaround Time

1 week

CPT Code(s)

81256

Cost

$250

Genes

Clinical Information

Hemochromatosis is a common inherited disorder of iron metabolism seen in, but not limited to, people of European descent. The recessively inherited disorder has a carrier frequency of 1/8 individuals and affects 1/250. Premature death may be caused by complications of chronic liver disease, hepatocellular carcinoma, or heart failure if the disease goes untreated. Early detection and treatment with routine phlebotomy can prevent these severe complications. For this reason, testing for hemochromatosis molecular testing is recommended in individuals with abnormal iron studies. Elevations in serum iron levels, transferrin saturation, and ferritin are often noted in patients with hemochromatosis. The molecular diagnosis of hemochromatosis involves an assay to detect two mutations within the Hfe (HLA-H) gene. Both the C282Y and H63D mutations have been associated with the clinical diagnosis of hemochromatosis, with the C282Y genotype being more penetrant.

Indications

Molecular testing is useful to confirm the diagnosis and to identify the disease causing mutations within a family to allow for carrier testing and prenatal diagnosis.

Detection

Homozygosity for C282Y will be identified in 60-90% of individuals with hemochromatosis
Compound heterozygosity for C282Y and H63D will be seen in 3-8% of individuals with hemochromatosis
Homozygosity for H63D will be found in approximately 1% of patients.

Specimen Requirements

5 to 7 ml of peripheral blood collected in an EDTA (lavender top) tube is the preferred specimen type. The minimal blood needed for reliable DNA isolation is 3 ml. Extracted DNA, dried blood spots, and saliva are also accepted for this test.

Transport Instructions

The specimen should be kept at room temperature and delivered via overnight shipping. If shipment is delayed by one or two days, the specimen should be refrigerated and shipped at room temperature. Do not freeze the specimen. Samples collected on Friday can be safely designated for Monday delivery.

Prenatal Testing Information

Prenatal diagnosis is available if the familial mutations are known. Additional fees for cell culture and maternal cell contamination may apply. Maternal cell contamination studies are required for all prenatal molecular tests. Contact the laboratory prior to sending a prenatal specimen.

Have Questions Need Support?

Call our laboratory at 1-800-473-9411 or contact one of our Laboratory Genetic Counselors for assistance.
Robin Fletcher, MS, CGC
Kellie Walden, MS, CGC

Molecular Testing, Targeted Analysis
Meet Reggie Roper

Meet Reggie Roper

Reggie has been part of the GGC family for over 18 years. He has short stature, webbing of his hands, pulmonary stenosis, seizures and hydrocephalus along with developmental delay. He carried an initial diagnosis of cardiofaciocutaneous (CFC) syndrome; however, as genetic testing advanced, GGC made the diagnosis of Noonan-like syndrome with loose anagen hair by identifying a mutation in the SHOC2 gene. He is also an active participant in the Greenwood Community Theatre's Penguin Project. "GGC is...

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