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Angiotensinogen (Serum) with Bromocresol Green Electrophoresis

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

This test measures the level of angiotensinogen, a protein in your blood that helps regulate blood pressure and fluid balance. It’s often used to assess conditions affecting liver function or hereditary angioedema.

Quick summary

["Angiotensinogen levels can indicate liver health or genetic risks for fluid-related disorders."]

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

Key facts at a glance

LOINC
78949-5
Short code
CATHANGP
Synonyms
Cath+angio proc perf Pnl
Category
chemistry
Sample
serum
Container
Not applicable - clinical procedure documentation panel; associated laboratory specimens collected in standard serum separator tubes (SST) or plasma tubes as required
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
≥ 18 years
Method
Observational clinical procedure panel - includes cardiac catheterization and angiographic imaging
CPT
93458, 93459, 93460, 93461, 93503, 93505, 93530, 93531, 93532, 93533, 93561, 93562
SNOMED
419760006
Specimen volume
Not applicable for procedural panel; associated serum testing requires minimum 1-5 mL whole blood
Stability
Not applicable for procedure documentation; associated serum specimens stable 24 hours at room temperature, 7 days at 2-8°C, longer at -20°C
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
1–24 hours
Order
routine

Why This Test Might Be Ordered

Your doctor may recommend this test if you have symptoms like swelling, unexplained bruising, or liver issues (e.g., cirrhosis, fatty liver). It’s also used to screen for hereditary angioedema, a rare genetic condition causing sudden swelling attacks.

How the Test Works

Blood is drawn and processed to separate serum. The protein is then analyzed using bromocresol green dye to measure its concentration through electrophoresis, a method that separates proteins based on size and charge.

What to Expect Before the Test

No special preparation is needed, but avoid alcohol for 24 hours before testing, as it may affect liver-related protein levels. Wear comfortable clothing for easy blood draw access.

What to Expect During the Test

A healthcare provider will insert a needle into your arm to draw blood. You may feel a slight pinch, but it’s usually over quickly. The process takes about 5 minutes, and you can resume normal activities afterward.

Reference range

Not applicable - this is a procedural panel documenting catheterization and angiography interventions performedN/A

Specimen: serum

NPO for 6-8 hours prior to procedure (except for essential medications with sips of water). Review allergies, especially to iodinated contrast media. Obtain informed consent. Verify renal function (creatinine, eGFR) prior to contrast administration. Discontinue anticoagulants as per institutional protocol. Pre-procedural laboratory workup includes CBC, BMP, coagulation studies, and cardiac biomarkers.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated levels may suggest liver disease (e.g., cirrhosis) or hereditary angioedema. Lower levels could indicate liver dysfunction or certain genetic disorders. Always discuss results with your doctor, as they’ll consider your full medical history and symptoms.

Short name

Angiotensinogen (Serum) BCG Electrophoresis

Frequently asked questions

What does a normal result mean?
A normal result doesn’t rule out liver issues or hereditary angioedema entirely. Your doctor will review it alongside other tests and your symptoms to guide further evaluation.
Can diet or medications affect this test?
Certain medications (e.g., blood pressure drugs) or liver-affecting drugs (e.g., acetaminophen in excess) may influence results. Avoid alcohol and ask your doctor about other potential interactions.
How often should this test be repeated?
Frequency depends on your condition. If ordered for monitoring liver health, repeat tests may be needed over months or years. For hereditary angioedema screening, follow your doctor’s advice for follow-ups.
  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