Cortisol (Morning Sample) Test: Booking, Price, and Results

The cortisol (morning sample) test measures the level of cortisol, a hormone produced by the adrenal glands (two small glands that sit above your kidneys), in your blood. Cortisol plays a key role in regulating blood sugar, blood pressure, metabolism, and your body's response to stress. Also known as the Serum Cortisol Test or AM Cortisol Test, this test uses a small blood sample collected between 7 and 9 a.m., when cortisol levels are naturally at their highest.

Doctors order this test to check whether the adrenal glands are working as they should. It helps identify both overproduction and underproduction of cortisol.

Common Symptoms That May Require This Test

The following symptoms may prompt your doctor to request a cortisol (morning sample) test.

• Unexplained weight gain, particularly around the face, neck, upper back, and abdomen
• A round or puffy face (sometimes called a "moon face")
• Skin that bruises easily or has stretch marks
• Persistent muscle weakness or fatigue
• Chronic low blood pressure or dizziness on standing
• Darkening of the skin in areas such as the elbows, knees, or neck
• Ongoing tiredness that does not improve with rest

Conditions This Test Can Help Detect

A cortisol test can help identify several adrenal and pituitary conditions, including the following.

• Cushing's syndrome: A condition caused by prolonged exposure to high cortisol levels
• Addison's disease: A condition in which the adrenal glands produce too little cortisol
• Secondary adrenal insufficiency: Low cortisol caused by insufficient signalling from the pituitary gland
• Pituitary tumours that produce excess ACTH (the hormone that tells the adrenal glands to make cortisol)
• Adrenal cortical tumours

Proper preparation for your cortisol test ensures accurate results. Here is what you need to know before your appointment.

Do You Need to Fast?

No, fasting is not required for this test. You can eat and drink normally before your sample is collected. However, if your doctor has ordered other tests alongside this one, fasting may be required for those. Check with your doctor or the lab at the time of booking.

Practical Tips Before Your Test

• Book your appointment so your sample is collected between 7 and 9 a.m., as required for this morning's cortisol test
• Avoid vigorous exercise the day before the test, as physical activity can raise cortisol levels
• Rest and try to stay calm before and during sample collection, as stress can also affect levels
• If you take oestrogen-containing medications (such as the combined contraceptive pill or hormone replacement therapy), inform your doctor. These should ideally be stopped at least six weeks before testing
• Stop biotin supplements at least 72 hours before the test
• Inform your doctor of all current medications, including steroids and supplements

Step-by-Step Procedure

1. Arrive at the collection centre or prepare for your home visit between 7 and 9 a.m. as instructed.
2. A trained phlebotomist will check your arm for a suitable vein, usually on the inner side of your elbow, and then clean the area with an antiseptic.
3. A small needle is inserted into the vein. You may feel a brief, mild pinch. A small amount of blood is drawn into a collection tube.
4. Once enough blood has been collected, the needle is removed. Light pressure is applied with a cotton ball or gauze, then covered with a small bandage.
5. The entire process usually takes under five minutes. You can resume normal activities immediately after.
6. The serum sample is stored refrigerated and dispatched to the NABL-accredited Lupin Diagnostics laboratory for analysis.

Your results will show your morning serum cortisol level. The table below gives general reference ranges for adults.

These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.

Results During Special Conditions

Certain situations can change how your results are interpreted.

Pregnancy: Cortisol levels rise progressively during pregnancy, particularly in the second and third trimesters, due to higher levels of oestrogen and cortisol-binding globulin. Results should be reviewed with caution in pregnant individuals.

Acute illness or trauma: Very high cortisol levels (above 1,000 nmol/L) can occur in patients who are acutely unwell or recovering from trauma, and may not reflect a long-term adrenal disorder.

Oestrogen medications: Patients taking oral contraceptives or HRT will typically show elevated total cortisol levels, which can affect interpretation. Ideally, these should be stopped six weeks before testing.

Shift work: A disrupted sleep-wake cycle can shift the normal cortisol rhythm, making standard morning reference ranges less straightforward to apply.

The cortisol test at Lupin Diagnostics is available starting at ₹600, with home sample collection offered across cities for your convenience.

Prices are indicative and may vary by location. Please confirm the current price at the time of booking.

Home Collection

Cortisol test home collection is available across multiple cities, allowing a trained phlebotomist to collect your sample at your doorstep during the required morning window. All samples are processed in NABL-accredited Lupin Diagnostics laboratories. Your digital report is delivered directly to you via email or WhatsApp.