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What is Random Blood Sugar (RBS) Test: Procedure, Symptoms & Risks

Keeping track of blood sugar is essential to avoid serious health issues. As you can infer from the name, this test can be done randomly at any time of the day, mainly for diagnosing diabetes. Therefore, it is unnecessary to fast before the procedure if someone wants to check their sugar levels.

Continue reading to find out more about “what is RBS test”.

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What Is a Random Blood Sugar Test?

A random blood sugar (RBS) test is a type of blood sugar test that is done to estimate blood sugar levels. It is also known as a casual blood glucose test (CBG). Sugar levels in a healthy person do not vary much, but in a diabetic patient, it fluctuates throughout the day. Hence, there is no fixed time for getting an RBS test.

What Is the RBS Test Used for?

An RBS test is generally used for a quick diagnosis of elevated glucose levels. However, it is essential to keep a check on blood sugars because, over time, it can damage your nerves, kidneys, blood vessels and eyes.

What Is the Procedure Required for a RBS Test?

The procedure for the RBS test includes this set of elements.

Step 1: Firstly, a phlebotomist will insert a needle into your vein to draw a blood sample. Then store it in a vial or test tube and send it to a lab for further analysis.

Step 2: Followed by an analysis of your blood sample by a certified technician.

Step 3: Within 48 hours, you will get the results via mail or the lab's portal. Sometimes, they even deliver the results to the doorstep.

How to Prepare for the RBS Test?

It requires no specific preparation for a random blood sugar test. Nevertheless, you must know what you will go through before, after and during an RBS test.

Before the Test: There is a need not to follow any specific routine or prepare for a random blood sugar test. You can eat or drink as usual, as there is no requirement for fasting.

During the Test: The technician at the lab will sanitise your arm before drawing the blood sample. It does not cause a lot of pain but a minor sting.

After the Test: Once you get the results from the lab, consult with your doctor to know whether you will need further treatment.

What Are the Risks Associated with RBS Tests?

There are bare minimum risks associated with a random blood sugar test. However, you may have the following conditions.

Slight pain at the sting of the needle
Light-headedness
An occasional bruise where the needle is put

When Do You Need a Random Blood Sugar Test?

A doctor may ask for a random blood sugar test if you have any symptoms of higher or lower glucose levels.

Symptoms of higher blood glucose levels:

Blurred vision
Fatigue
Increased in thirst
More urination
Wounds or sores that do not heal
Weight loss
Numbness in your hands and feet

Symptoms of lower blood glucose levels:

Feeling jittery
Hunger
Fatigue
Dizziness
Confusion
Headache
Fast heartbeat
Difficulty in speaking
Troubled vision
Seizures

Besides these signs and symptoms, doctors also recommend RBS tests to those at risk of developing type 2 diabetes.

What Is the Meaning of Different Results of a Random Blood Sugar Test?

If the results show higher glucose levels than usual, it suggests you are at a higher risk of developing diabetes. Elevated glucose levels can also be a sign of:

Pancreatic disorder
Stress
Hyperthyroidism

In case your lab test comes positive for diabetes, and your glucose levels are lower than normal, it may be due to the following:

Side effects from some diabetes medicines
Not maintaining a healthy diet, especially after taking diabetic medicines
A sudden increase in physical activities

However, if you do not have diabetes, yet your results show lower sugar levels, it may indicate:

Kidney disease
Liver disease
Hypothyroidism
Alcohol use disorder (AUD)

So far, we talked about "what is the RBS test" and other questions one may have regarding random blood sugar tests. It has very minimal side effects, which reduce the risks of such a test. Thus, you must consult a doctor for a random blood sugar test if you have any of the symptoms. Getting this test will help you avoid sugar fluctuations in your body.

FAQs About Random Blood Sugar (RBS) Test

All

How long does it take to get the RBS test results?

Typically the RBS test results come within the first 48 hours, but it may vary as per the lab you choose.

What is the normal range for an RBS test?

The normal blood sugar range for an RBS test is less than 140 mg/dL (7.8 mmol/L).

What happens if the RBS level is high?

A high RBS level signifies higher blood sugar. If left untreated, it can result in Hyperglycemia, damage to different organs, increased heart and kidney diseases, nerve problems and vision issues.

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