Glucose measured 15 minutes post oral administration with β-blocker withdrawal (serum/plasma concentration)
This test checks how your body processes glucose after you stop taking a beta-blocker medication, specifically 15 minutes later. It helps assess how your blood sugar responds to this change.
Understanding how your glucose levels behave after stopping beta-blockers can help doctors monitor your diabetes or blood sugar control.
Key facts at a glance
- LOINC
- 53481-8
- Short code
- Glucose 15M pre betaxolol SerPl-sCnc
- Synonyms
- Glucose 15M pre betaxolol SerPl-sCnc
- 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 if you’re taking a beta-blocker for conditions like high blood pressure or heart problems and want to see how your body handles glucose afterward. It’s often used to evaluate how well your body manages blood sugar when certain medications are adjusted.
What to Expect Before the Test
You’ll likely be asked to fast (not eat or drink except water) for a set period before the test, depending on your doctor’s instructions. Bring any medications you’re currently taking, including beta-blockers, to discuss with your healthcare provider.
How the Test Works
A blood sample is taken from a vein in your arm. The lab measures the concentration of glucose in your serum or plasma, specifically 15 minutes after you stop taking your beta-blocker. The test is typically done under controlled conditions in a clinical setting.
What the Results Mean
Results help doctors compare how your body handles glucose before and after stopping the beta-blocker. Abnormal results might indicate how your body’s natural processes (like insulin sensitivity) are affected by the medication.
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 is critical for patients on beta-blockers to assess potential metabolic side effects, such as altered glucose tolerance. It helps tailor treatment plans to ensure safe and effective management of both cardiovascular and metabolic health.
Short name
Post-β-blocker glucose test
Frequently asked questions
Will I need to fast before this test?
How long will I have to wait for my results?
Can I take my beta-blocker before the test?
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