Insulin, 2 Hours, Glucose-75 g
This test measures insulin levels two hours after a 75-gram glucose load. It evaluates whether insulin secretion returns to baseline and helps assess sustained insulin resistance.
12 hours
Turnaround
Blood
Sample
What the Insulin, 2 Hours, Glucose-75 g test tells you
Insulin is the hormone your pancreas releases to move sugar out of the bloodstream and into muscle, liver and fat cells. This test measures how much insulin is still circulating two hours after you drink a standard measured glucose solution, the same drink used for a glucose tolerance test. By that point the first rush of hormone has passed and the pancreas should be easing off, so the two-hour figure describes the tail of the response rather than its peak.
Reading the late part of the curve tells your doctor something the fasting sample cannot. In a body whose tissues respond readily to insulin, the hormone falls back towards its resting level once blood sugar has been brought under control. When muscle and liver cells resist the signal, the pancreas keeps secreting to force the same result, and insulin is still high long after the drink. A different pattern — a blunted or flat response with sugar that stays elevated — points away from resistance and towards a pancreas that is struggling to produce enough.
The value is never interpreted on its own. Your doctor reads it beside the glucose drawn from the same tube, beside the fasting insulin taken before the drink, and often beside the one-hour sample, because it is the shape of the whole curve that carries the meaning. Insulin testing of this kind is used to describe metabolic function and guide follow-up; the diagnosis of diabetes itself rests on glucose and HbA1c measurements rather than on insulin.
Part of comprehensive insulin resistance assessment, often paired with GTT for patients with PCOS, metabolic syndrome, or a strong family history of diabetes.
The two-hour sample shows whether insulin has settled back down after the glucose load or is still working hard to clear it.
Insulin that stays high while blood sugar looks acceptable is one of the first measurable signs that tissues have stopped responding easily.
Paired with the fasting and one-hour samples, it turns three separate readings into a shape your doctor can interpret.
A high late insulin and a low one point in opposite directions, distinguishing resistant tissues from a pancreas losing output.
Reasons your doctor may request the Insulin, 2 Hours, Glucose-75 g test
Your doctor may order this test for any of the reasons below. Some are routine checks, others follow specific symptoms or an earlier result.
Confirming insulin resistance
Investigation of suspected insulin resistance when fasting results alone have been inconclusive.
PCOS, metabolic signs & family history
Assessment of polycystic ovary syndrome, where insulin resistance often drives the hormonal picture.
Weight gain around the abdomen, skin tags or darkened velvety skin folds suggesting a metabolic cause.
A strong family history of type 2 diabetes in someone whose glucose readings are still acceptable.
Symptoms after eating & metabolic follow-up
Shakiness, sweating or hunger some hours after eating, suggesting a delayed insulin response.
Follow-up of metabolic syndrome alongside a lipid profile and a blood pressure review.
Pick a morning slot online or on WhatsApp — come fasted per the prep note below.
A DHA-licensed nurse collects your sample at home or in the office — free home collection.
A physician-reviewed, easy-to-read report lands securely by WhatsApp and email.
Insulin two hours after a 75g glucose load.
Ranges are a guide — your physician interprets your result alongside your symptoms and history.
What a higher result can point to
- Insulin resistance, where the pancreas keeps secreting because muscle and liver cells respond poorly to the signal.
- Polycystic ovary syndrome, which is commonly accompanied by an exaggerated and prolonged insulin response.
- Obesity, particularly fat carried around the abdomen and within the liver.
- Early type 2 diabetes, in which insulin output is still generous but no longer effective.
- A delayed secretion pattern, where the peak arrives late and insulin is still climbing at the two-hour mark.
What a lower result can point to
- Reduced beta-cell output, where the pancreas can no longer sustain secretion after a glucose load.
- Type 1 diabetes or another autoimmune loss of the insulin-producing cells.
- Long-standing type 2 diabetes in which secretion has declined after years of overwork.
- Previous pancreatic surgery, chronic pancreatitis or another condition that has reduced functioning pancreatic tissue.
These are possibilities, not diagnoses. A single value outside the reference range is interpreted alongside your symptoms, history and other tests — your doctor decides what it means for you.
What this test cannot tell you
- Insulin results vary between laboratories and methods, so values from different providers should not be compared directly.
- Injected insulin can interfere with the measurement, so the test is of limited use in people already treated with insulin.
- The test describes metabolic function; the diagnosis of diabetes is made on glucose and HbA1c, not on insulin.
- A single curve reflects one day, and illness, sleep loss or recent activity can shift the response.
Risks of the blood draw
- Mild bruising or brief soreness where the needle went in.
- Occasional lightheadedness, which settles after a few minutes of rest.
- Bleeding or infection at the site, which is rare with sterile single-use equipment.
- 1The sample is taken two hours after a standard glucose drink, at the tail of the insulin response.
- 2It is always read together with the glucose measured at the same moment.
- 3Insulin that stays high suggests resistance; insulin that stays low suggests reduced pancreatic output.
- 4Fasting is required before the drink, and you remain at the laboratory until the timed sample is taken.
- 5Insulin testing supports interpretation but does not itself diagnose diabetes.
Frequently Asked Questions
Everything you need to know about the Insulin, 2 Hours, Glucose-75 g test. Can't find what you're looking for?
Talk to our team→Glucose tells your doctor the outcome; insulin tells them the effort it took to get there. Two people can clear the same drink equally well, but one may need far more hormone to do it, and only the insulin measurement shows that difference.
It suggests your tissues are responding sluggishly to the hormone, so the pancreas is compensating. Your doctor treats it as an early metabolic signal rather than a diagnosis, and usually looks at weight, waist, lipids and blood sugar alongside it.
Sometimes. In someone whose blood sugar came down promptly, a modest insulin at two hours is exactly what should happen. It is only concerning when it is low while blood sugar remains high, which suggests the pancreas is not keeping up.
Both can. Stress hormones and short sleep make tissues temporarily less responsive to insulin, which can lift the reading. If the day of your test was unusual, mention it, because your doctor may prefer to repeat it under calmer conditions.
This test measures insulin levels two hours after a 75-gram glucose load. It evaluates whether insulin secretion returns to baseline and helps assess sustained insulin resistance.
Part of comprehensive insulin resistance assessment, often paired with GTT for patients with PCOS, metabolic syndrome, or a strong family history of diabetes.
Yes. We recommend fasting for 10-12 hours before your 2-Hour Insulin (75g Load) test; plain water is fine. Overnight fasting for 8–12 hours is required.
The 2-Hour Insulin (75g Load) test uses a blood sample, collected quickly by our DHA-licensed phlebotomist with minimal discomfort.
Results for the 2-Hour Insulin (75g Load) test are typically ready within 12 hours. You will receive a secure digital report, and your Smart Report highlights anything outside the normal range.
The 2-Hour Insulin (75g Load) test is AED 155, which includes free home sample collection and a physician-reviewed report. You can also build a custom panel and pay only for the markers you choose.
Yes. A DHA-licensed phlebotomist can collect your sample at home or the office anywhere in Dubai at no extra cost, 7 days a week. See how it works.
It is commonly chosen by adults at metabolic risk. If you are not sure it is right for you, our care team is happy to advise.
Add the 2-Hour Insulin (75g Load) test to your cart and complete the short booking wizard, choosing home collection or a lab visit. Guest checkout lets you book without creating an account.
Yes. It is processed at our EIAC-accredited laboratory (ISO 15189:2022) under DHA license 0046381 and verified by board-certified pathologists.
Every report includes reference ranges and plain-language notes. If you have questions, our care team can arrange a clinician review — just get in touch.
Absolutely. Add it to a curated health package or bundle it with any of our 160+ biomarkers, often from a single sample in one visit.