Genetic analysis of hemoglobin variants (qualitative/screening)
This test checks for abnormal hemoglobin types that may cause conditions like sickle cell disease or other blood disorders.
["This screening helps identify inherited blood disorders that could affect your health over time."]
Key facts at a glance
- LOINC
- 61167-3
- Short code
- HBV S202C Islt Ql Genotyp
- Synonyms
- HBV S202C 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
What This Test Measures
The test analyzes the structure of your red blood cells’ hemoglobin to detect unusual hemoglobin variants. These variants can be linked to genetic conditions that may require monitoring or treatment.
Why It’s Done
Your healthcare provider may recommend this test if you have a family history of blood disorders, symptoms like fatigue, pain, or frequent infections, or if you’re planning pregnancy and there’s a risk of genetic conditions.
Sample Collection
A small blood sample will be taken from your arm using a needle. The blood is processed to extract DNA for genetic analysis.
What to Expect Before the Test
No special preparation is needed, but inform your provider about any medications or supplements you take. Avoid strenuous activity 24 hours before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Identifying hemoglobin variants early can help manage conditions like sickle cell trait or disease, preventing complications such as severe pain, organ damage, or life-threatening crises. Some variants may also affect pregnancy outcomes, so this test can guide prenatal care decisions.
Short name
Hemoglobin Variant Screening (Genetic)
Frequently asked questions
How long will results take?
What does a positive result mean?
Can diet or lifestyle affect this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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