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Full-Length Genetic Sequence Analysis of a Specified Gene (e.g., FGA for Fibrinogen Alpha Chain)

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

This test involves sequencing the entire coding region of a specific gene (likely related to blood clotting or protein synthesis) to check for any mutations or variations that may affect how your body functions.

Quick summary

["Genetic sequencing helps identify rare or inherited conditions that might influence blood health or protein production."]

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

Key facts at a glance

LOINC
92992-7
Short code
FGA + FGB + FGG Full Mut Anl Bld/T Seq
Synonyms
FGA + FGB + FGG Full Mut Anl Bld/T Seq
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
sequencing
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 examines the complete genetic sequence of a targeted gene (such as the FGA gene, which codes for fibrinogen alpha chain, a protein involved in blood clotting). This includes all coding regions (exons) to detect any changes in the DNA that could impact protein function.

Why It’s Ordered

Your healthcare provider may recommend this test if you have symptoms or a family history suggesting a genetic disorder linked to abnormal protein production (e.g., bleeding disorders, clotting issues, or metabolic conditions). It may also be used in research or specialized diagnostic scenarios.

Sample Collection and Preparation

A blood sample is typically drawn from a vein in your arm. The DNA is extracted from your white blood cells and prepared for sequencing. This process ensures the entire gene region is analyzed for mutations.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the blood draw if fasting is required for other tests. Wear comfortable clothing and plan for a short rest afterward.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

What does this test detect?
This test detects any genetic variations (mutations, deletions, or duplications) within the full coding region of the specified gene, which could alter protein function and potentially cause health issues.
How long does it take to get results?
Results typically take 2–4 weeks, depending on the lab’s workflow and whether additional testing (like confirmatory assays) is needed. Your provider will discuss findings with you.
Can I fast before this test?
No fasting is required for this genetic sequencing test, but always follow your healthcare provider’s instructions for any related bloodwork.
  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