Ordering Recommendation

Confirm clinical diagnosis of hereditary hemochromatosis (HH) in an individual with biochemical findings of iron overload. Screen adult family members of individuals with known HH. Test reproductive partner of an individual with HH for carrier status. Not recommended for initial hemochromatosis testing.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Lavender (EDTA), pink (K2EDTA), or yellow (ACD Solution A or B).

Specimen Preparation

Transport 3 mL whole blood. (Min: 1 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Frozen specimens in glass collection tubes.

Remarks
Stability

Ambient: 72 hours; Refrigerated: 1 week; Frozen: 1 month

Methodology

Polymerase Chain Reaction/Fluorescence Monitoring

Performed

Sun-Sat

Reported

2-7 days

Reference Interval

C282Y Negative: The patient is negative for the HFE C282Y mutation.
H63D Negative: The patient is negative for the HFE H63D mutation.
S65C Negative: The patient is negative for the HFE S65C mutation.

Interpretive Data

Background information for Hemochromatosis (HFE) 3 Mutations:
Characteristics:
Disorder of iron metabolism resulting in excessive iron storage leading to increased skin pigmentation, arthritis, hypogonadism, diabetes mellitus, heart arrhythmias/failure, cirrhosis and liver carcinoma.
Incidence: One in 300 individuals of Northern European descent; unknown in other ethnicities.
Inheritance: Autosomal recessive.
Penetrance: 5 percent of C282Y homozygotes, 1 percent of C282Y/H63D compound heterozygotes and rare H63D homozygotes develop clinical symptoms.
Cause: Two pathogenic HFE gene mutations on opposite chromosomes.
Mutations Tested: p.C282Y (c.845G>A), p.H63D (c.187C>G), and p.S65C (c.193A>T).
Clinical Sensitivity: 85 percent of hereditary hemochromatosis in Northern Europeans is caused by C282Y homozygosity and 5 percent by C282Y/H63D compound heterozygosity.
Methodology: PCR and fluorescence monitoring.
Analytical Sensitivity and Specificity: 99 percent.
Limitations: HFE mutations, other than those targeted, will not be detected. Diagnostic errors can occur due to rare sequence variations.

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Counseling and informed consent are recommended for genetic testing. Consent forms are available online.

Compliance Category

Laboratory Developed Test (LDT)

Note

This test is not recommended for asymptomatic patients under 18 years of age.

Hotline History

N/A

CPT Codes

81256

Components

Component Test Code* Component Chart Name LOINC
0055606 H63D Hemochromatosis Mutation 21696-0
0055608 C282Y Hemochromatosis Mutation 21695-2
0055659 Hemochromatosis Mutation Interpretation 34519-9
0055661 S65C Hemochromatosis Mutation 38380-2
2001316 HFE PCR Specimen 31208-2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • HLA-H Gene
  • C282Y
  • H63D
  • Hemochromatosis (HFE) Genotype
  • HFE Gene
Hemochromatosis (HFE) 3 Mutations