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Renovascular Stenosis Indicator via Angiography Blood Pressure Ratio

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

This test evaluates the relationship between blood pressure and vascular narrowing in the kidneys, often assessed through imaging like angiography to guide treatment decisions.

Quick summary

["Assesses kidney blood flow and potential blockages that may affect blood pressure regulation."]

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

Key facts at a glance

LOINC
8796-5
Short code
RV SVI Angio BP
Synonyms
RV SVI Angio BP
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
angiography-biplane
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

This test combines blood pressure measurements with imaging findings from angiography to determine if narrowing (stenosis) in the renal arteries is contributing to high blood pressure. It helps doctors assess whether revascularization (e.g., angioplasty or stenting) may be needed to restore proper blood flow.

Why It Matters for Your Health

Chronic kidney artery stenosis can restrict blood flow to your kidneys, raising blood pressure. This test helps identify if this is the cause of your hypertension or other symptoms, guiding targeted treatment to improve kidney function and blood pressure control.

How the Test Works

Blood pressure is measured during or after angiography, where contrast dye highlights blood vessels. The test compares your blood pressure to the degree of artery narrowing to estimate how much blood flow is impaired. No specific reference ranges apply, as results are interpreted clinically.

Common Uses

Doctors may order this test if you have uncontrolled high blood pressure despite medication, kidney issues, or symptoms like fatigue or swelling, especially if they suspect kidney artery blockages.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Frequently asked questions

How often will I need this test?
This test is typically performed once to evaluate suspected kidney artery stenosis. Follow-up may depend on your treatment plan, kidney function, and blood pressure response to interventions.
What does a low or high ratio mean?
A lower ratio suggests significant artery narrowing may be reducing kidney blood flow and contributing to your blood pressure. A higher ratio suggests less impact from artery narrowing, but further evaluation may still be needed.
Can I prepare for this test?
No special preparation is needed. Follow your doctor’s instructions regarding fasting or medications, as they may vary based on the angiography procedure details.
  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