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Genetic analysis of hemoglobin variants (qualitative genotype)

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

This test identifies the specific type of hemoglobin present in your blood, which can help diagnose conditions like sickle cell disease or other inherited blood disorders.

Quick summary

["Understanding your hemoglobin type helps doctors tailor treatment and monitor health risks."]

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

Key facts at a glance

LOINC
61168-1
Short code
HBV S202I Islt Ql Genotyp
Synonyms
HBV S202I Islt Ql Genotyp
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
genotyping
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Is Done

Doctors may order this test if you have symptoms like fatigue, pain, or frequent infections, or if you have a family history of blood disorders. It’s also used in newborn screening or before certain surgeries.

What to Expect Before the Test

No special preparation is needed. A small blood sample is taken from your arm, similar to a routine blood draw. If testing is done on dried blood spots (e.g., newborn screening), you may need to return to the clinic for follow-up.

What the Results Mean

Results show which hemoglobin variants are present in your blood. For example, it may identify sickle hemoglobin (HbS), C hemoglobin, or other variants. Some variants are normal, while others may require further medical evaluation.

Common Conditions Linked to This Test

Abnormal hemoglobin variants can cause conditions like sickle cell disease, thalassemia, or other inherited blood disorders. These conditions can affect how your blood carries oxygen, leading to symptoms like anemia or organ damage over time.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Hemoglobin variant genotyping

Frequently asked questions

What does my hemoglobin variant result indicate?
Your result may suggest an inherited blood disorder if certain variants are found. A doctor will discuss findings with you, including whether further testing or treatment is needed. Always share results with your healthcare provider for personalized guidance.
How often should I get this test?
If you have a known blood disorder, your doctor may recommend regular follow-ups to monitor your hemoglobin type. If this test is part of routine screening (e.g., newborn), results are typically reviewed shortly after testing.
Can lifestyle changes help if my hemoglobin variant is abnormal?
While some blood disorders can’t be cured, certain lifestyle changes—like staying hydrated, avoiding smoking, or managing chronic conditions—may help improve symptoms. Always follow your doctor’s advice for personalized care.
  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