Hemoglobin Variant Detection by Nucleic Acid Probe (Blood)
This test checks for unusual or rare forms of hemoglobin, which are proteins in your red blood cells that carry oxygen. Certain hemoglobin variants can cause health issues like anemia or blood disorders.
["Detecting hemoglobin variants helps identify potential genetic blood conditions early."]
Key facts at a glance
- LOINC
- 16934-2
- Short code
- HBV DNAp Bld Ql NAA+probe
- Synonyms
- HBV DNAp Bld Ql NAA+probe
- Category
- chemistry
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- 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
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like fatigue, pale skin, unusual bruising, or if you have a family history of hemoglobin disorders. It’s also sometimes used in newborn screening or before certain medical procedures.
What to Expect Before the Test
You’ll likely have a simple blood draw from a vein in your arm. No special preparation is usually needed, but check with your provider if you’re on blood-thinning medication or have a history of bleeding issues.
What the Results Mean
Results show whether your hemoglobin contains any unusual variants. If variants are found, they may guide further testing or treatment plans, such as genetic counseling or specialized care.
Common Conditions Linked to This Test
Positive results for certain hemoglobin variants (e.g., sickle cell trait or disease) can indicate inherited blood disorders like sickle cell anemia, thalassemia, or other hemoglobinopathies.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Hemoglobin Variant Screening
Frequently asked questions
How long will I need to wait for my results?
Can I eat or drink before this test?
Will this test affect my daily routine?
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