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Genetic sequencing analysis of hemoglobin variants (full mutation screening)

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

This test examines the genetic makeup of your hemoglobin to identify any inherited or acquired mutations that may affect how your red blood cells function.

Quick summary

["Understanding your hemoglobin genetics can help diagnose or monitor conditions linked to blood disorders."]

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

Key facts at a glance

LOINC
90925-9
Short code
HBB gene Full Mut Anl Amn/CVS Seq
Synonyms
HBB gene Full Mut Anl Amn/CVS Seq
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
sequencing
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

What This Test Measures

The test analyzes the full spectrum of hemoglobin variants, including common and rare mutations, by sequencing the DNA responsible for hemoglobin production. This includes checking for structural hemoglobinopathies (like sickle cell disease or thalassemia) and other genetic changes that may alter hemoglobin’s stability or function.

Why It’s Done

Doctors may order this test if you have symptoms of blood disorders (such as fatigue, pale skin, or unusual pain), a family history of hemoglobin-related conditions, or if you’re considering pregnancy and there’s a risk of genetic inheritance.

Sample Collection and Process

A blood sample is taken, typically from a vein in your arm. The DNA is extracted from your white blood cells and analyzed to detect mutations in the genes responsible for hemoglobin production.

Common Conditions Monitored

This test helps diagnose or confirm conditions like sickle cell disease, thalassemia, and other hemoglobinopathies. It can also be used to screen for genetic risks in family planning.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Hemoglobin mutation sequencing

Frequently asked questions

How long will it take to get my results?
Results are usually available within 1–2 weeks, depending on lab processing and sequencing complexity. Your healthcare provider will discuss findings with you.
What does a positive result mean?
A positive result indicates the presence of hemoglobin mutations linked to blood disorders. Your doctor will explain the implications based on the specific findings and may recommend further testing or treatment options.
Can this test be done on urine or saliva instead of blood?
No, this test requires a blood sample for DNA analysis. Saliva or urine samples may not provide sufficient genetic information for full hemoglobin mutation screening.
  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