Medically reviewed by Dr. Alan M. Tebby, D.C., FMCSA Certified Medical Examiner | Last updated: January 23, 2026
TL;DR: DOT Physical Hypoglycemia
DOT physical hypoglycemia evaluation focuses on episode severity and frequency. Mild, infrequent hypoglycemia with good awareness is often certifiable. Severe hypoglycemia requiring assistance is typically disqualifying until 6-12 months of stability. Bring blood sugar logs and documentation of any episodes and treatment changes. At Charlotte DOT Exam Center, our FMCSA-certified examiners have extensive experience evaluating this condition. Call 704-544-3494. $70 flat rate.
Understanding Hypoglycemia and DOT Physical Certification
Hypoglycemia affects many commercial drivers and requires careful evaluation during the DOT physical examination. The Federal Motor Carrier Safety Administration establishes guidelines under 49 CFR 391.41 that medical examiners follow when evaluating drivers with this condition.
At Charlotte DOT Exam Center, our FMCSA-certified medical examiners have extensive experience evaluating drivers with hypoglycemia. We understand the documentation requirements, certification criteria, and medical standards that determine whether you can be certified for commercial driving. This comprehensive guide covers everything you need to know about DOT physical hypoglycemia certification requirements.
The FMCSA Diabetes & Hypoglycemia Guidelines provides additional resources for understanding this condition. According to the American Diabetes Association Hypoglycemia, proper management of this condition is essential for commercial driving safety.
Why Hypoglycemia Matters
The FMCSA regulations provide specific guidance for evaluating hypoglycemia in commercial drivers. Medical examiners assess whether your condition could affect your ability to safely operate a commercial motor vehicle.
Key factors in the evaluation include your current symptoms, treatment effectiveness, medication side effects, and risk of sudden incapacitation. The examiner reviews your medical history, current treatment plan, and any specialist documentation you provide.
Understanding these requirements helps you prepare appropriately for your DOT physical and gather the documentation needed to support your certification. The NIH Hypoglycemia Information provides additional medical information about this condition.
Causes of Hypoglycemia
This aspect of hypoglycemia evaluation is critical for determining your certification eligibility. The medical examiner carefully assesses this factor during your DOT physical examination.
Documentation from your treating physician or specialist significantly supports your certification. Bring recent test results, medication lists, and any clearance letters from specialists involved in your care.
Most drivers with well-managed hypoglycemia can be certified for commercial driving. The key is demonstrating that your condition is properly controlled and does not pose a safety risk while operating a commercial vehicle.
Severe Hypoglycemia
Understanding the specific requirements and potential complications related to hypoglycemia helps you prepare for your DOT physical. This section covers important considerations that affect certification decisions.
Related conditions may also be evaluated during your examination. For example, drivers with this condition often have associated conditions like diabetes that are also assessed during the DOT physical.
The certification decision considers your complete health picture, not just individual conditions. Managing all related health factors supports successful certification.

Hypoglycemic Awareness
This section addresses specific aspects of hypoglycemia management that are relevant to commercial driving. Proper management of your condition is essential for maintaining your CDL certification.
Work closely with your healthcare providers to optimize your treatment. Regular monitoring and medication compliance demonstrate your commitment to safe driving and support continued certification.
If you have questions about how your specific situation affects certification, contact Charlotte DOT Exam Center before your appointment. We can advise what documentation would be helpful for your evaluation.
Documentation Requirements
Proper preparation for your DOT physical examination significantly improves your certification outcome. Gathering appropriate documentation and ensuring your condition is well-controlled before your appointment supports successful certification.
Bring all relevant medical records, including recent test results, medication lists, and specialist letters. Complete documentation helps the medical examiner make an informed certification decision during a single visit.
Continue your regular treatment regimen leading up to your examination. Do not make medication changes immediately before your DOT physical without consulting your treating physician.
Prevention While Driving
Certificate duration for drivers with hypoglycemia varies based on condition stability and overall health status. Well-controlled conditions typically receive longer certification periods.
The standard maximum certificate duration is two years. Drivers with well-managed conditions and no other health concerns may receive this maximum duration. Conditions requiring closer monitoring may receive one-year certificates initially.
Your certification duration may change over time as you demonstrate sustained stability. Consistent follow-through with treatment and monitoring supports longer certification periods at subsequent examinations.
Frequently Asked Questions
Can I get a CDL if I have had hypoglycemia?
It depends on the severity and frequency of your hypoglycemia. Mild, infrequent hypoglycemia that you recognize and treat appropriately is often certifiable. Severe or frequent hypoglycemia raises significant safety concerns.
How long after a severe hypoglycemic episode can I be certified?
Typically at least six to twelve months without severe hypoglycemia is required. Documentation showing what caused the episode and what changes were made to prevent recurrence supports certification.
Will taking sulfonylurea medication affect my certification?
Sulfonylureas can cause hypoglycemia but are not automatically disqualifying. The examiner evaluates your blood sugar control and hypoglycemia history to determine certification eligibility.
Do I need to check my blood sugar before every trip?
This depends on your hypoglycemia risk. Drivers on the ITDM exemption must check blood sugar before driving. Others at hypoglycemia risk are strongly encouraged to monitor regularly.
What if I have hypoglycemia unawareness?
Hypoglycemic unawareness significantly affects certification prospects. Work with your physician to restore awareness if possible, and consider continuous glucose monitoring with low glucose alerts.
Can I drive commercially if I have reactive hypoglycemia?
Mild reactive hypoglycemia well-controlled with dietary modifications is often certifiable. Severe reactive hypoglycemia may affect certification depending on symptom severity and control.
Schedule Your DOT Physical Today
Charlotte DOT Exam Center provides comprehensive DOT physical examinations for commercial drivers with hypoglycemia throughout the Charlotte metropolitan area. Our FMCSA-certified medical examiners understand the certification requirements for this condition and work to make your examination as smooth as possible.
Charlotte DOT Exam Center
8415 Pineville-Matthews Road, Suite 102
Charlotte, NC 28226
Phone: 704-544-3494
Price: $70 flat rate
Walk-ins Welcome
Hours:
Monday–Friday: 8:30 AM – 5:00 PM
Saturday: 8:30 AM – 12:00 PM
Contact us to schedule your appointment. We recommend calling in advance if you have questions about what documentation to bring or if you have complex medical situations requiring additional evaluation.
