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Glucose (Serum) During Intravenous Insulin Infusion (Triple-Bolus Protocol)

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

This test measures your blood sugar levels before starting an insulin drip, often during a controlled glucose management protocol.

Quick summary

["Helps track how your body responds to insulin before treatment begins."]

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

Key facts at a glance

LOINC
40318-8
Short code
Glucose pre Triple Bolus SerPl-sCnc
Synonyms
Glucose pre Triple Bolus 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 preparing for a procedure requiring precise blood sugar control, such as surgery or a specialized insulin regimen. It helps ensure your glucose levels are stable before starting an insulin infusion.

What to Expect Before the Test

No special preparation is needed, but you may be asked to fast for a few hours before the test. Bring any medications or questions to your healthcare provider.

What Happens During the Test

A healthcare professional will draw blood from a vein in your arm. The sample is sent to a lab to measure glucose concentration using an enzymatic method.

What the Results Mean

Results will show your glucose level at a specific time point before insulin begins. This helps doctors plan your treatment to avoid low or high blood sugar.

Reference range

Fasting: 70-100 mg/dLN/A

Specimen: serum

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 undergoing insulin therapy or glucose regulation protocols. Abnormal results may indicate how your body responds to insulin or suggest underlying conditions affecting blood sugar control.

Short name

Glucose monitoring pre-insulin infusion

Frequently asked questions

Will I need to do anything special after the test?
You can resume normal activities immediately. If you’re receiving insulin or glucose management treatment, follow your doctor’s instructions closely.
How long will I wait for my results?
Results are typically available within 1–2 business days, depending on your lab’s processing time. Your doctor will discuss them with you.
Can I eat or drink before this test?
Yes, but fasting may be recommended if this is part of a broader glucose management protocol. Always follow your healthcare provider’s instructions.
  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