GLUCOSE - SERUM / PLASMA (1/2 HR) in Kammanahalli, Bangalore

The Glucose – Serum/Plasma (1/2 Hr) test measures the concentration of glucose in the blood 30 minutes (one-half hour) after a specified event. This measurement is most commonly utilised as one of the timed samples collected during an Oral Glucose Tolerance Test (OGTT), or less frequently, as a post-meal (postprandial) screen. The primary goal of this timed test is to assess the body's rapid response and initial ability to process and metabolise a surge of glucose, providing an early indication of glucose intolerance.
This test is critical in the diagnosis of prediabetes and diabetes, as well as in specific research or clinical protocols to map the precise dynamics of insulin secretion and glucose clearance. If you are searching for the 30-minute Glucose test price or a reliable lab near me, Apollo 24|7 offers access to comprehensive diabetes diagnostic services with secure and timely report delivery.

What is the Glucose – Serum/Plasma (1/2 Hr) Test?

The Glucose – Serum/Plasma (1/2 Hr) test is a blood draw that quantifies the circulating glucose concentration precisely 30 minutes after the start of a glucose challenge.
When performed as part of an Oral Glucose Tolerance Test (OGTT), the procedure involves:

1.    Drawing a baseline (Fasting) blood sample.
2.    The patient needs to consume a standard amount of glucose solution (typically 75 grams for non-pregnant adults).
3.    Drawing the next blood sample exactly 30 minutes later. Subsequent samples are usually drawn at 60, 90, and 120 minutes (if suggested).

The 30-minute mark is highly sensitive, reflecting the peak blood glucose level achieved as the intestines rapidly absorb the sugar load. An abnormally high reading at this point suggests either early insulin resistance or rapid glucose absorption, indicating impaired glucose tolerance.

What is the Glucose – Serum/Plasma (1/2 Hr) Price?

The cost of the 30-minute glucose measurement is usually calculated as part of the total Oral Glucose Tolerance Test (OGTT), which includes all the timed blood draws (Fasting, 30 min, 60 min, 90 min, 120 min, etc.).

Factors Affecting the Test Cost

The final price is influenced by these essential quality and service factors:

•    Multiple Draws: The fee covers the phlebotomy and processing for multiple timed blood samples required for the complete OGTT, with the 30-minute sample being one specific point.
•    Glucose Load: The price often includes the cost of the standard, certified glucose solution consumed by the patient.
•    Strict Timing Protocol: The fee covers the intensive laboratory and staff monitoring required to ensure each blood draw is performed at the precise, mandated time intervals.
•    Quality Assurance: The analysis is performed at NABL-accredited Apollo laboratories, ensuring accurate and reliable glucose measurements essential for diagnosis.
To find the most accurate and current OGTT price near me (which includes the 30-minute reading), please check the Apollo 24|7 app or website for real-time pricing specific to your location.

What is the Purpose of the Glucose – Serum/Plasma (1/2 Hr) Test?

The primary purpose of measuring glucose at the 30-minute mark is to identify and characterise the body's acute handling of glucose absorption and early insulin release.

•    Early Detection of Glucose Intolerance: An elevated 30-minute glucose reading often provides the earliest signal of impaired glucose tolerance, even before the 2-hour reading is considered abnormal.
•    Assessing Insulin Dynamics: It helps clinicians and researchers understand the speed and magnitude of the patient's glucose surge and the subsequent insulin response (which is often measured concurrently).
•    Diagnosis of Prediabetes: Abnormal readings at 30 minutes contribute to the overall interpretation of the OGTT, which is a key tool in diagnosing both impaired fasting glucose and impaired glucose tolerance (prediabetes).
•    Specific Clinical Protocols: In certain high-risk individuals or specific research settings, this reading provides essential data on the kinetics of glucose metabolism.

Who Should Get the Glucose – Serum/Plasma (1/2 Hr) Test Done?

This test is performed as an integral part of the Oral Glucose Tolerance Test (OGTT).
You may be advised to take the OGTT (which includes the 30-minute draw) if:
•    You have a borderline high fasting glucose reading that requires further clarification on your glucose tolerance status.
•    You are a pregnant woman undergoing screening for Gestational Diabetes Mellitus (though the specific OGTT protocol for GDM may differ slightly).
•    You exhibit risk factors for type 2 diabetes (obesity, family history of diabetes, history of GDM, or polycystic ovary syndrome).
•    You present with symptoms suggestive of diabetes but have inconclusive results from standard fasting or random glucose tests.

Components of Glucose – Serum/Plasma (1/2 Hr)

This test focuses on quantifying the concentration of a single analyte at a precise time point.
•    GLUCOSE: This parameter measures the concentration of glucose (sugar) in the blood serum or plasma exactly 30 minutes after a controlled oral glucose load. The result reflects the immediate spike in blood sugar resulting from rapid intestinal absorption.

Understanding a Glucose – Serum/Plasma (1/2 Hr) Report

The 30-minute glucose value is interpreted as part of the complete OGTT panel. The reference ranges and units may vary slightly between laboratories, depending on their equipment and regional guidelines. Always consult your healthcare provider for interpretation in the context of clinical findings and the other timed OGTT results.

Typical Interpretation Ranges (Non-Pregnant Adults - 75g OGTT)

The 30-minute peak is highly variable, but for context, it is typically the highest reading in a normal glucose profile.

Interpretation Note: In standard diagnostic protocols for prediabetes or Type 2 Diabetes (using a 75-gram OGTT), the 2-hour (120 min) reading is the primary diagnostic marker, not the 30-minute reading. However, the 30-minute value is crucial for detailed clinical assessment and research into the early stages of insulin resistance.

Preparation and Procedure for the Glucose – Serum/Plasma (1/2 Hr) Test

Strict preparation, including overnight fasting, is mandatory for the initial baseline draw of the OGTT, which precedes the 30-minute draw.

How Is the Glucose – Serum/Plasma (1/2 Hr) Test Performed?

1.    Fasting: The patient fasts for eight to twelve hours overnight.
2.    Baseline Draw: A first blood sample is taken (Fasting Glucose).
3.    Glucose Load: The patient drinks a standardised glucose solution (e.g., 75 grams) within a short period (usually 5 minutes).
4.    30-Minute Draw: Exactly 30 minutes after the patient finishes the solution, a trained phlebotomist performs the second blood draw from a vein in the arm.
5.    Subsequent Draws: Additional samples are taken at 60, 90, and 120 minutes to complete the full tolerance curve.

Is Fasting Needed Before the Test?

Yes, an overnight fast of eight to twelve hours is mandatory for the Oral Glucose Tolerance Test (OGTT), of which the 30-minute measurement is a part. No food or drink (except plain water) is allowed during this period or throughout the test.

Can Medications Affect the Test Results?

Yes. Many medications can affect blood glucose levels, including steroids, oral contraceptives, diuretics, and certain psychiatric medications. It is critical to inform your doctor about all current drugs, as some may need to be temporarily paused before the test.

What Is the Best Time of Day to Take the Test?

The test should begin in the morning (usually between 7:00 AM and 9:00 AM) after the overnight fast, as glucose tolerance can decrease later in the day (diurnal variation).

How Frequently Is the Test Needed?

The OGTT (and thus the 30-minute draw) is typically performed once for diagnosis. It may be repeated if an initial result was borderline or if monitoring of gestational diabetes is required.

Booking the Glucose – Serum/Plasma (1/2 Hr) Test Online & Checking Reports

Apollo 24|7 simplifies the process of scheduling the Oral Glucose Tolerance Test (OGTT) and accessing your detailed results.

A. What are the Steps to Schedule the Test on Apollo 24|7?

1.    Visit the Apollo 24|7 website or mobile application and search for Oral Glucose Tolerance Test (OGTT).
2.    Review the latest test price for your city and click the ‘Book Now’ button.
3.    Select your preferred date and time slot for the fasting blood draw.
4.    Complete the secure online payment. You will receive immediate confirmation and detailed preparation instructions regarding the fasting requirement.

B. How Do I Access My Test Results Online on Apollo 24|7?

1.    Log in to your Apollo 24|7 account using your registered phone number or email ID.
2.    Go to the ‘Health Records’ or ‘My Reports’ section on your dashboard.
3.    Click on the test name to view your detailed, NABL-certified report, which will show the glucose values for all the timed points, including the 30-minute reading.
4.    You can easily view the report online or download it in PDF format to share instantly with your physician.

Conclusion

The Glucose – Serum/Plasma (1/2 Hr) reading, taken as part of a complete OGTT, provides crucial insight into the rapid kinetics of glucose absorption and metabolism. While the 2-hour reading is the standard diagnostic point, the 30-minute peak is highly informative, often serving as the earliest indicator of the body's impaired ability to handle a glucose load. This measurement is thus a vital component in the accurate assessment and diagnosis of glucose intolerance, prediabetes, and diabetes.