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Evaluation of Arteriovenous Graft Function via Access Dysfunction Testing

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

This test assesses how well your arteriovenous (AV) graft is functioning to provide blood access for dialysis or other medical procedures. It helps identify issues that may require medical attention.

Quick summary

This test checks if your graft is working properly for blood flow and access needs.

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

Key facts at a glance

LOINC
72041-7
Short code
TESTINGOFARTERIOVENOUSGRAFTFORACCESSDYSFUNCTIONPERFORMED
Synonyms
—
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
esrd
CPT
86430
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

Why This Test Is Done

Your healthcare provider may order this test if you experience problems like reduced blood flow, swelling, or difficulty accessing your graft during dialysis or other treatments. It helps determine if the graft needs adjustment, repair, or replacement.

What to Expect Before the Test

No special preparation is needed. The test typically involves drawing a small sample of blood from your graft or nearby vein to analyze blood flow characteristics. The procedure is quick and usually done in a clinic or hospital setting.

What the Test Measures

The test evaluates blood flow resistance, pressure differences, and other indicators of graft function. It may include measurements of blood pressure, flow rates, or other hemodynamic parameters to assess access quality.

What the Results Mean

Results help identify if your graft is functioning as expected. Low or abnormal readings may indicate restricted blood flow, which could cause discomfort, pain, or difficulty with dialysis. Your provider will discuss findings with you and recommend next steps if needed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Detecting and Managing Access Dysfunction

Short name

AV Graft Access Function Test

Frequently asked questions

How often will I need this test?
The frequency depends on your graft’s condition and your healthcare provider’s recommendations. Some patients may need this test periodically to monitor graft health, especially if they experience recurring access issues.
What happens if my graft test results are abnormal?
If results show dysfunction, your provider may suggest adjustments like changing dialysis settings, using a different access site, or consulting a vascular specialist for graft revision or replacement.
Will I feel pain during the test?
You may feel a slight pinch or discomfort during blood drawing, but the test itself is generally painless. Most patients experience minimal discomfort, and you can discuss pain management options with your provider if needed.
  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