Skip to content

Guided catheter placement monitoring (radiographic contrast study)

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

This test involves imaging with a contrast dye to help doctors guide the placement of a catheter (a thin tube) into your body, often for procedures like draining fluids, delivering medication, or accessing blood vessels.

Quick summary

["This test helps ensure your catheter is positioned correctly for safety and effectiveness."]

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

Key facts at a glance

LOINC
35912-5
Short code
RF Guided Cath place
Synonyms
RF Guided Cath place
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
rf
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

What Does This Test Involve?

A contrast dye (radiopaque material) is injected into your bloodstream or body space, and X-ray images are taken to visualize its movement. This helps doctors confirm the catheter’s proper placement, often during procedures like a chest tube insertion, central line placement, or vascular access.

Why Is This Test Done?

Doctors may order this test to verify that a catheter is correctly positioned in your body, ensuring it reaches the intended area (e.g., a vein, artery, or body cavity) without complications like misplacement or leakage.

Common Uses in Medical Procedures

This test is commonly used during procedures such as chest tube insertion (for draining air or fluid from the chest), central venous catheter placement (for long-term IV access), or guiding catheters in vascular studies.

How Is the Test Performed?

You’ll likely receive a local anesthetic to numb the area where the catheter is inserted. After the catheter is placed, the contrast dye is injected, and X-ray images are captured to confirm its position.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Frequently asked questions

Why might this test be important?
Accurate catheter placement reduces risks like infections, bleeding, or damage to surrounding tissues. This test ensures the catheter is in the correct spot, improving treatment outcomes and patient safety.
What are the risks or side effects?
Possible risks include allergic reactions to the contrast dye (rare), temporary discomfort at the insertion site, or minor bruising. If you have kidney issues, contrast dye may affect kidney function temporarily.
How long will I need to stay for this test?
You may need to stay for a short time (e.g., 30 minutes to a few hours) depending on the procedure, as doctors monitor your response to the contrast dye and catheter placement.
  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