
Why Are So Many Doctors Overlooking Insulin Testing?
You might be surprised to learn that most healthcare providers do not routinely check insulin levels. If you have ever wondered why insulin testing is not a standard part of routine bloodwork, you are not alone. The reality is that there are several reasons for this gap in care. Understanding these barriers can help you take control of your health and advocate for the tests you need.
Why Are Insulin Levels Not Routinely Measured?
- Doctors Are Not Taught to Prioritize Insulin Testing: Medical training tends to focus on diagnosing and treating diseases rather than preventing them. Because of this, the role of insulin in conditions beyond diabetes is not emphasized in medical school or dietetic programs. Many doctors simply do not realize that insulin resistance can develop years before blood sugar levels become abnormal.
- Insurance Does Not Always Cover Insulin Testing: Many insurance companies do not reimburse for insulin testing unless a patient has diabetes. Since providers know this can result in out-of-pocket costs for patients, they may avoid ordering the test altogether.
- Doctors May Not Know What to Do with the Results: If a patient’s insulin levels come back high but their glucose levels are normal, some providers feel unsure about how to interpret the results. Without clear guidelines on what to do next, they may avoid ordering the test in the first place.
- Lack of FDA-Approved Treatments for Insulin Resistance: Insulin resistance is a major driver of PCOS, yet there are no FDA-approved treatments for it. This means that many of the medications used to manage insulin resistance in PCOS, like metformin, are prescribed off-label. Without clear treatment guidelines, some doctors may not see a reason to measure insulin levels.
- Doctors Assume Most People Have High Insulin Anyway: Given that insulin resistance is common, some providers think insulin testing is unnecessary. They assume that many patients already have elevated insulin levels, so they do not see the benefit of confirming it with a test.
How to Get Your Insulin Tested
If your provider does not routinely check insulin levels, you can still take steps to get tested.
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Request an Oral Glucose Tolerance Test with Insulin
This test measures how your body handles a large amount of glucose and whether your insulin levels rise too high in response. -
Order a Lilli Kit
If your provider declines your request, you can test your insulin levels at home. The Lilli Health At-Home Metabolic Testing Kits are available on the Lilli Health website and provides an easy way to check your insulin levels. -
Ask for a C-Peptide Test
This test measures C-peptide, which reflects how much insulin your body is producing. High C-peptide levels can be a sign of insulin resistance. -
Order a Test Independently
Many labs, including Quest Diagnostics and LabCorp, allow you to order your own insulin test without a doctor’s order.
Why Does Insulin Testing Matter?
Elevated insulin levels are linked to type 2 diabetes, heart disease, and even certain cancers. By the time blood sugar becomes abnormal, insulin resistance has often been present for years or decades, silently causing damage. Identifying high insulin levels early gives you the opportunity to make changes before more serious health issues develop.
A Low Insulin Lifestyle can help lower insulin naturally, improving symptoms like fatigue, brain fog, stubborn weight, cravings, poor sleep, anxiety, skin issues, and gut health.
Take Control of Your Health
Insulin resistance is often overlooked, but that does not mean you have to ignore it. If your provider is not ordering insulin tests, ask for one. If they decline, there are other ways to check your levels.