Theophylline -Test - Price, Normal Range | Sprint Diagnostics Hyderabad

Patient Preparing : No special preparation is needed for this test. However, you should inform your doctor about any medications or supplements you are currently taking, as certain substances can interfere with the test results.

₹ 1000


Theophylline is a drug primarily used to treat respiratory diseases such as asthma and chronic obstructive pulmonary disease (COPD). It functions by relaxing the smooth muscles of the bronchial airways and opening up air passages, thus making it easier to breathe. Theophylline also suppresses the response of the airways to stimuli that trigger an asthmatic response.

Regular monitoring of theophylline levels in the blood is essential due to its narrow therapeutic index; this means that there's only a small difference between the drug's therapeutic level and toxic level. Therefore, it's crucial to ensure the right dosage of theophylline, avoiding too little (which wouldn't relieve symptoms) or too much (which could cause toxic effects).

Test Name Theophylline
Sample Type Blood
Preparations Required No special preparation is needed for this test. However, you should inform your doctor about any medications or supplements you are currently taking, as certain substances can interfere with the test results.
Report Time 2 Days
Price in Hyderabad ₹ 1000

Why is the Theophylline test done?

The Theophylline test is used to monitor the level of the drug in your bloodstream to ensure it falls within the therapeutic range. Too much theophylline can lead to toxicity, while too little may not effectively manage your symptoms.

What does the result of a Theophylline test mean?

Results vary depending on the laboratory, but generally, the therapeutic range for theophylline is 10-20 mcg/mL. If your levels are outside of this range, your doctor may adjust your dosage.

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How often should the Theophylline test be done?

This test is generally done when you start theophylline treatment to determine the right dose for you. After that, the test should be done whenever your dose is changed, if you start or stop other medications, and occasionally during treatment to ensure the drug level remains within the therapeutic range.

How is the sample collected for a Theophylline test?

A healthcare provider will collect a blood sample from a vein in your arm using a small needle. The procedure is quick and usually only causes minor discomfort.

What factors can affect the level of Theophylline in the body?

Various factors can affect theophylline levels, including age, liver function, heart failure, other medical conditions, smoking, and certain medications.

What are the side effects of Theophylline?

Possible side effects of theophylline include nausea, headache, rapid or irregular heartbeat, and seizures in severe cases. If you experience any side effects, contact your healthcare provider.

Is it safe for pregnant women to take Theophylline?

If you are pregnant or planning to become pregnant, discuss the risks and benefits with your healthcare provider. Theophylline can cross the placenta, but the effects on the fetus are unclear.

What should I do if my Theophylline levels are too high?

If your theophylline levels are too high, your healthcare provider will likely decrease your dose to bring the level back into the therapeutic range.

What should I do if my Theophylline levels are too low?

If your levels are too low, your healthcare provider may increase your dose to ensure effective management of your symptoms.

Can I drink alcohol while taking Theophylline?

Alcohol can increase theophylline levels in the body, potentially leading to toxicity. It's best to avoid or limit alcohol consumption while taking this medication.

Which doctor should I consult if my Theophylline test results are abnormal?

If your Theophylline test results are abnormal, you should consult the doctor who prescribed the medication. This is usually a pulmonologist or primary care physician.

Can certain foods affect Theophylline levels?

Yes, certain foods, especially those containing caffeine, can increase theophylline levels in the body.

Can I stop taking Theophylline if my symptoms improve?

No, you should not stop taking Theophylline without consulting your healthcare provider. Stopping suddenly can lead to withdrawal symptoms and a resurgence of your respiratory symptoms.

Are there alternatives to Theophylline for treating asthma and COPD?

Yes, there are many alternatives to Theophylline for treating asthma and COPD, including corticosteroids, beta-agonists, and leukotriene modifiers. Discuss these options with your healthcare provider.

What are the symptoms of Theophylline overdose?

Theophylline overdose can cause rapid or irregular heartbeat, seizures, vomiting, and in severe cases, cardiac arrest. If you suspect a Theophylline overdose, seek medical attention immediately.

Is there a best time to take Theophylline?

Theophylline can be taken at any time of day, but it's usually recommended to take it at the same time every day. This helps to keep a constant level of the drug in your bloodstream. Always follow your healthcare provider's instructions regarding when to take your medication.

Can I take other medications while I'm on Theophylline?

Theophylline can interact with many other medications, so it's vital to inform your healthcare provider about all the medicines you're taking, including over-the-counter drugs and dietary supplements. Your doctor will then decide the best course of action.

How will I know if Theophylline is working for me?

If theophylline is working for you, you should notice a reduction in your respiratory symptoms such as wheezing, shortness of breath, and chest tightness. Remember that improvements might take some time, so it's crucial to continue taking the medication as directed by your healthcare provider, even if you don't feel better immediately.

What are the long-term effects of taking Theophylline?

Long-term use of theophylline can lead to side effects such as an upset stomach, increased heart rate, and problems with sleep. In some cases, it can lead to more serious complications like seizures or heart rhythm disorders. Regular monitoring of your theophylline levels can help mitigate these risks.

Can smoking or secondhand smoke affect my Theophylline levels?

Yes, smoking can increase the rate at which your body removes theophylline, potentially making the drug less effective. Secondhand smoke can have a similar effect. If you're a smoker, discuss this with your healthcare provider.

The goal of theophylline treatment is to reduce and manage the symptoms of respiratory disorders such as asthma or COPD. While taking this medication, regular blood tests will be important to ensure the drug is working effectively and safely. It's also important to take your medication exactly as your healthcare provider has prescribed, even if you feel better. Changes to your dose or schedule should only be made under the supervision of your healthcare provider. Remember that managing a chronic respiratory condition is a team effort that includes you, your healthcare provider, and any other healthcare professionals involved in your care.

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