Glucose (Plasma) Following Clonidine Stimulation
This test measures your blood sugar level after taking a medication called clonidine to check how your body responds to stress or certain medications.
["Assesses how your body manages blood sugar under controlled stress conditions."]
Key facts at a glance
- LOINC
- 92666-7
- Short code
- GH + glucose p cloNIDine stim pnl SerPl
- Synonyms
- GH + glucose p cloNIDine stim pnl SerPl
- Category
- glucose
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 70
- Ref high
- 100
- Critical range
- 50 N/A – 400 N/A
- Fasting
- true
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82947
- SNOMED
- 260395008
- 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
Doctors may order this test to evaluate how your body handles blood sugar changes, especially if you have conditions like diabetes or are taking medications that affect blood sugar. It can also help diagnose or monitor certain hormonal or metabolic disorders.
What to Expect Before the Test
You’ll likely fast for several hours before the test. Your blood will be drawn after you take a clonidine pill or patch to stimulate your body’s response. Avoid eating or drinking anything except water for the fasting period.
During the Test
A healthcare provider will draw blood from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause discomfort. The test itself is quick, and you can return to normal activities afterward.
After the Test
You can eat and drink normally after fasting is complete. If you experience any unusual symptoms like dizziness or low blood sugar, contact your doctor immediately.
Reference range
Fasting: 70-100 mg/dLN/A
Fasting for 8-12 hours required. Water is permitted. Avoid chewing gum and smoking before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test helps identify how your body responds to stress-induced blood sugar changes, which can be critical in diagnosing conditions like diabetes, adrenal disorders, or reactions to medications. Abnormal results may indicate issues with insulin production, metabolism, or stress responses.
Short name
Clonidine-Stimulated Plasma Glucose
Frequently asked questions
How is this test different from a regular blood sugar test?
What does a high or low result mean?
Do I need to prepare differently if I’m on diabetes medication?
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 16, 2026. · Read our editorial policy