Central Venous Glucose Monitoring (Guidance for Exchange of Central Venous Catheter)
This test provides real-time guidance to help healthcare providers manage glucose levels when exchanging a central venous catheter (CVC). It ensures accurate monitoring of blood sugar during the procedure to prevent complications like hypoglycemia or hyperglycemia.
["Real-time glucose management during CVC exchange helps maintain stable blood sugar levels."]
Key facts at a glance
- LOINC
- 107274-3
- Short code
- RF Guided Guidance for exchange of CVC
- Synonyms
- RF Guided Guidance for exchange of CVC
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Critical range
- 0.5 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
Why This Test Is Used
Patients with central venous catheters often require frequent monitoring of glucose levels, especially if they have diabetes or are receiving insulin therapy. During CVC exchanges—when a new catheter is inserted or replaced—maintaining stable glucose levels is critical to avoid complications like infections, tissue damage, or metabolic disturbances.
How the Test Works
This test uses a specialized probe or sensor placed in the central venous catheter to continuously measure glucose concentration in the blood. The results provide immediate feedback to healthcare providers to adjust insulin or other glucose-regulating treatments as needed during the procedure.
What to Expect Before the Test
No special preparation is needed for this test. The healthcare team will ensure the CVC is properly positioned and connected to the glucose monitoring system before exchange begins. You may feel a slight prick or discomfort from the probe insertion, but it is typically brief.
What to Expect During the Test
During the CVC exchange, glucose levels will be monitored in real-time. If levels drop or rise too quickly, your healthcare provider may adjust medications or fluids to keep them stable. You may hear beeping or see alerts on a monitor if glucose levels are outside a safe range.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Stable glucose monitoring during CVC exchanges reduces the risk of severe blood sugar fluctuations, which can lead to complications such as infections, tissue damage, or even seizures in critical care settings. It also helps prevent long-term complications like nerve or organ damage from prolonged hyperglycemia or hypoglycemia.
Short name
CVC Glucose Exchange Guidance
Frequently asked questions
How often will glucose levels be checked during the exchange?
Will I feel any pain or discomfort during this test?
What happens if my glucose levels are too high or too low during the exchange?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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 17, 2026. · Read our editorial policy