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Alpha-Thalassemia (HBA1/HBA2)
Clinical Genetic Test
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offered by
MVZ Dr. Eberhard & Partner Dortmund
View lab's test page
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GTR Test Accession: Help GTR000327564.2
INHERITED DISEASEHEMATOLOGYDYSMORPHOLOGY ... View more
Last updated in GTR: 2014-03-23
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Last annual review date for the lab: 2024-11-14 LinkOut
At a Glance
Test purpose: Help
Diagnosis; Mutation Confirmation; Risk Assessment; ...
Conditions (3): Help
Hemoglobin H disease; Hemoglobin Bart hydrops syndrome; alpha Thalassemia
Genes (2): Help
HBA1 (16p13.3); HBA2 (16p13.3)
Methods (3): Help
Molecular Genetics - Deletion/duplication analysis: Multiplex Ligation-dependent Probe Amplification (MLPA); ...
Target population: Help
Not provided
Clinical validity: Help
Not provided
Clinical utility: Help
Not provided
Ordering Information
Offered by: Help
MVZ Dr. Eberhard & Partner Dortmund
View lab's website
View lab's test page
Test short name: Help
HBA1, HBA2
Specimen Source: Help
  • Isolated DNA
  • Paraffin block
  • Peripheral (whole) blood
Test Order Code: Help
Alpha-Thalassemia, HBA1, HBA2
Contact Policy: Help
Post-test email/phone consultation regarding genetic test results and interpretation is provided to patients/families.
Pre-test email/phone consultation regarding genetic test results and interpretation is provided to patients/families.
How to Order: Help
EDTA-blood, DNA, other peripheral whole blood samples (not frozen). Other specimen after consultation.
Order URL
Test service: Help
Clinical Testing/Confirmation of Mutations Identified Previously
Genetic counseling
Result interpretation
Test additional service: Help
Custom mutation-specific/Carrier testing
Test development: Help
Test developed by laboratory (no manufacturer test name)
Informed consent required: Help
Yes
Pre-test genetic counseling required: Help
Decline to answer
Post-test genetic counseling required: Help
Decline to answer
Recommended fields not provided:
Lab contact for this test, Test strategy
Conditions Help
Total conditions: 3
Condition/Phenotype Identifier
Test Targets
Genes Help
Total genes: 2
Gene Associated Condition Germline or Somatic Allele (Lab-provided) Variant in NCBI
Methodology
Total methods: 3
Method Category Help
Test method Help
Instrument
Deletion/duplication analysis
Multiplex Ligation-dependent Probe Amplification (MLPA)
Applied Biosystems 3730 capillary sequencing instrument
Sequence analysis of the entire coding region
Bi-directional Sanger Sequence Analysis
Applied Biosystems 3730 capillary sequencing instrument
Targeted variant analysis
GAP-PCR
Clinical Information
Test purpose: Help
Diagnosis; Mutation Confirmation; Risk Assessment; Screening
Variant Interpretation:
What is the protocol for interpreting a variation as a VUS? Help
Identified variants are documented in-house and are comprehensively evaluated using mutation databases and literature by scientific and medical directors.

Will the lab re-contact the ordering physician if variant interpretation changes? Help
Yes.
Recommended fields not provided:
Clinical validity, Clinical utility, Target population, Are family members with defined clinical status recruited to assess significance of VUS without charge?, Is research allowed on the sample after clinical testing is complete?, Sample negative report, Sample positive report
Technical Information
Test Procedure: Help
Mutation analysis of the alpha globin gene complex is carried out by three molecular genetic methods. 1. Gap-PCR for detection of the following six common deletions: -(alpha) 20,5, --MED, --SEA, --FIL, -(alpha) 3,7 and -(alpha) 4,2. 2. Sequencing of HBA1 and HBA2. 3. MLPA analysis of HBA1, HBA2, and the … View more
Test Platform:
None/not applicable
Availability: Help
Tests performed
Entire test performed in-house
Analytical Validity: Help
Analytical sensitivity and specificity >99%.
Proficiency testing (PT):
Is proficiency testing performed for this test? Help
Yes

Method used for proficiency testing: Help
Formal PT program

PT Provider: Help
RCPA, Royal College of Pathologists of Australasia

Description of PT method: Help
In addition to the annually formal PT program (RCPA, Royal College of Pathologists of Australasia) inter-laboratory quality assurance is performed.
VUS:
Software used to interpret novel variations Help
A collection of bioinformatic tools.

Laboratory's policy on reporting novel variations Help
Novel variations are evaluated and reported if suspected relevant.
Recommended fields not provided:
Test Confirmation, Assay limitations, Description of internal test validation method, Citations for Analytical validity, Major CAP category, CAP category, CAP test list
Regulatory Approval
FDA Review: Help
Not provided
Additional Information

IMPORTANT NOTE: NIH does not independently verify information submitted to GTR; it relies on submitters to provide information that is accurate and not misleading. NIH makes no endorsements of tests or laboratories listed in GTR. GTR is not a substitute for medical advice. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.