What this test is
The test measures glucose concentration while fasting. Persistently high values indicate hyperglycaemia or diabetes, while values below the reference range may relate to hypoglycaemia or prolonged fasting.
Category: Clinical Chemistry
Fasting Blood Sugar (Glucose)
A fasting blood sugar test measures glucose after at least eight hours without food. It screens for diabetes and pre-diabetes and is a core item in most annual health check packages.
What it is used for, and who should test
- Screening for diabetes from age 35, or earlier with risk factors such as excess weight or family history
- Monitoring treatment in people with diabetes or those working on lifestyle changes
- A required item in most pre-employment and annual health check packages
Sample and preparation
- Sample
- 2-3 mL of blood in a NaF or serum tube, depending on the laboratory protocol
- Preparation
- Fast for at least 8-10 hours. Plain water is fine, but avoid coffee, tea, sweet drinks and smoking before the test.
Where to get tested
Samples are collected and results issued at S.F. Laboratory, the in-house laboratory of BK5 Med Health Clinic in Don Hua Lo, Chon Buri. No appointment is needed; walk in during opening hours.
- Sample collection at BK5 Clinic, 149/6-7 Don Hua Lo, Chon Buri District, Chon Buri 20000
- Open Monday-Friday 08.30-20.00 and Saturday 08.30-17.00
- Ask questions or book ahead on LINE @824xsgsj or call 063-223-6161
The information on this page is general knowledge to support your decisions and is not personal medical advice. Interpreting results and planning treatment requires assessment by a doctor. Please consult our medical staff before deciding on testing or treatment.
Related services
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- Working at height: how to prepare for the medical checkRead article
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- How long to fast before a blood test, and what to avoidRead article
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- Diabetes screening: how FBS and HbA1c differRead article
Need a pre-employment check or a medical certificate?
BK5 Clinic provides pre-employment health checks, risk-factor screening, 5-disease screening, work-at-height checks and drug screening, with medical certificates and summary reports for employers.
Clinical Chemistry
Frequently asked questions about this test
Does fasting too long affect the result?
Yes. Fasting longer than 12-14 hours can distort the reading, so aim for roughly 8-10 hours.
What if I ate before the test?
Tell our staff before the sample is taken. Food raises glucose levels and makes interpretation unreliable, so the test may be rescheduled.
How should I prepare for Fasting Blood Sugar (Glucose)?
Fast for at least 8-10 hours. Plain water is fine, but avoid coffee, tea, sweet drinks and smoking before the test.
How long do results take?
About 45 min, depending on the laboratory workload that day. Our staff will confirm the collection time when you are served.
Where can I have this test done?
Samples are collected and results issued at S.F. Laboratory, the in-house laboratory of BK5 Med Health Clinic in Don Hua Lo, Chon Buri. No appointment is needed; walk in during opening hours.
How much does Fasting Blood Sugar (Glucose) cost?
Prices are not shown on this website. Ask for pricing and packages on LINE @824xsgsj or call 063-223-6161.
Contact us
Book a visit or ask a question
Add us on LINE @824xsgsj to ask about tests and pricing, or fill in the form below and our team will get back to you as soon as possible.
Phone
063-223-6161LINE Official
@824xsgsj
Address
149/6-7 Don Hua Lo, Chon Buri District, Chon Buri 20000, Thailand
Get directions (Google Maps)Opening hours
- Monday - Friday
- 08.30 - 20.00
- Saturday
- 08.30 - 17.00