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Genetic Mutation Analysis for Hemoglobin (Alpha-Thalassemia Screening)

Published: August 9, 2026Updated: August 16, 2026

This test checks for genetic changes that may affect how your body produces hemoglobin, the protein in red blood cells that carries oxygen. It helps identify potential risks for conditions like alpha-thalassemia.

Quick summary

["This test helps assess inherited blood disorders that could impact your health."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
53849-6
Short code
HTC2 gene Mut Anl Bld/T
Synonyms
HTC2 gene Mut Anl Bld/T
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
molgen
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What This Test Measures

The test analyzes your DNA for specific mutations in the genes responsible for producing alpha-globin chains, which are part of hemoglobin. These mutations can lead to reduced or absent alpha-globin production, affecting red blood cell function.

Why It Might Be Ordered

Your healthcare provider may recommend this test if you have a family history of alpha-thalassemia, certain blood disorders, or if you’re considering pregnancy and want to screen for genetic risks.

Sample Collection and Preparation

A small blood sample is typically taken from your arm. The sample is processed to extract DNA for genetic analysis. No special preparation is needed, but avoid strenuous activity 24 hours before the test.

Test Results and Interpretation

Results will identify whether you carry specific mutations linked to alpha-thalassemia. Your healthcare provider will discuss findings with you, including potential risks and next steps, such as further testing or genetic counseling.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Alpha-Thalassemia Genetic Test

Frequently asked questions

If mutations are detected, they may indicate an increased risk of alpha-thalassemia traits or disease, depending on the number and type of mutations present. Early identification can help guide prenatal testing, family planning, or management strategies.
This test is not a diagnostic tool for acute blood disorders like anemia; it focuses on genetic predisposition.
How long will it take to get my results?
Results are usually available within 1–2 weeks, depending on laboratory processing times and genetic analysis complexity.
Do I need to fast or avoid certain foods before this test?
No fasting or dietary restrictions apply. Blood is drawn as needed, and no special preparation is required beyond standard precautions.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy