Varicella IgM

Venlafaxine is a commonly prescribed medication for mental health conditions such as major depression and anxiety disorders. To ensure its effectiveness and safety, healthcare providers monitor venlafaxine and its active metabolite, O-desmethylvenlafaxine, through blood tests. These tests are crucial for optimizing drug therapy and ensuring patient adherence. The preferred specimen for testing is serum, drawn from a red-top tube without additives. Accurate results require the specimen to be collected at the trough level, just before the next dose. Advanced analytical techniques like LC-MS/MS and HPLC/UV are used for precise measurement. The therapeutic range for venlafaxine is 100-500 ng/mL, and 200-400 ng/mL for its metabolite. Monitoring these levels helps adjust dosages, assess adherence, detect toxicity, and evaluate treatment efficacy. The test results, typically available within 3 to 10 days, enable healthcare providers to make informed decisions, ensuring optimal patient care and minimizing adverse effects.

Price of test:£68

The lowest price from the last 30 days: £68

Awaiting result:

One day

Collect material:

Blood

Prepare:

Learn more

Purpose of the test

Venlafaxine is a key medication for mental health conditions, requiring careful monitoring of its levels in the blood. This ensures effective treatment and patient safety. Key points include:

- Specimen Requirements: Serum from a red-top tube is preferred; minimum 0.4 mL.
- Collection: Draw blood pre-dose for accuracy.
- Storage: Store at room temperature, refrigerate if needed.
- Methodology: Use LC-MS/MS or HPLC/UV for precise measurement.
- Reference Ranges: Venlafaxine: 100-500 ng/mL; O-desmethylvenlafaxine: 200-400 ng/mL.
- Clinical Use: Adjust dosage, assess adherence, detect toxicity, evaluate efficacy.

Who Should Get Tested

The Varicella IgM test is essential for diagnosing recent varicella-zoster virus (VZV) infections, which cause chickenpox and shingles. Key individuals who should be tested include:

- Immunocompromised Patients: Early detection is critical for managing potential life-threatening complications.
- Pregnant Women: To prevent congenital varicella syndrome.
- Healthcare Workers: To confirm immunity and prevent outbreaks.
- Newborns and Infants: Especially if exposed to VZV during delivery.

Testing involves enzyme immunoassay or indirect immunofluorescence, with results interpreted in clinical context for accurate diagnosis and management.

Blood Test Preparation Guidelines

Time of day

It is recommended to schedule your appointment for blood tests in the morning hours between 7:00-10:00.

Fasting

It is recommended to fast for approximately 12 hours before blood sampling. The last meal of the previous day should ideally be consumed around 6:00 p.m. On the day before the test, avoid heavy and fatty meals as well as alcohol.

Stay hydrated

Drinking water prior to testing can help with sample collection.

Other factors

Tests should not be performed after a sleepless night or intense physical activity. It is recommended to avoid exercise and stress immediately before blood collection and to not smoke. A short rest is recommended.

Medications and supplements:

Blood samples should be collected before the morning dose. Some drugs can interfere with test results. Consult with your doctor whether you can delay your dose because of lab tests.

Biotin supplements:

High doses of biotin supplements can affect test results, causing false elevation or reduction. It's recommended to avoid taking biotin for at least 72 hours before blood collection. If you are taking biotin, inform the personnel collecting the blood so that they can provide specific instructions.

Interpreting Test Results

Understanding test results for venlafaxine levels is crucial for effective patient care. Key points include:

- Specimen Requirements: Use serum from a red-top tube; avoid gel-barrier tubes. Minimum volume: 0.4 mL.
- Collection Timing: Draw blood at trough level, just before the next dose.
- Storage: Store at room temperature initially; refrigerate or freeze if testing is delayed beyond three days.
- Methodology: LC-MS/MS or HPLC/UV for precise measurement.
- Reference Ranges: Venlafaxine: 100-500 ng/mL; O-desmethylvenlafaxine: 200-400 ng/mL.
- Clinical Use: Adjust dosage, assess adherence, detect toxicity, and evaluate efficacy.

Price of test:£68

The lowest price from the last 30 days: £68

AI-Powered Insights and Expert Validation

Advanced AI Interpretation

Diagu's AI system represents a breakthrough in medical test analysis, employing state-of-the-art algorithms meticulously trained on a vast spectrum of authoritative medical literature and data. This system intricately analyses laboratory test results, extracting nuanced insights that might elude conventional methods. Our AI delves into complex interrelations between various health markers, offering a comprehensive understanding that supports accurate diagnosis and effective treatment planning. The foundation of our AI's analytical prowess lies in its extensive training, encompassing data from globally recognised medical journals, trusted healthcare databases, and breakthrough scientific studies. This ensures that every analysis is grounded in the latest and most comprehensive medical knowledge.

Expert Doctor Confirmation

While our AI provides deep analytical insights, the human touch remains indispensable. Every AI-generated interpretation is meticulously reviewed by experienced medical professionals, ensuring a harmonious blend of advanced technology and expert clinical judgment. This dual-layer approach guarantees that the insights provided are not only technologically sophisticated but also clinically relevant. Our medical experts ensure that the AI's interpretations align with current medical standards and practices, adding a layer of validation that only seasoned healthcare professionals can provide. This process reinforces the reliability of the test results, offering peace of mind to both patients and healthcare providers.

Language Model and Trusted Sources

At the core of Diagu's AI system is an advanced language model, engineered to transform complex medical data into clear, comprehensible, and informative descriptions. This model is adept at articulating detailed test analyses in a way that is accessible to both healthcare professionals and patients. The model's development involved the meticulous processing of high-quality sources, including reputable medical websites, renowned medical textbooks, and peer-reviewed research papers. This ensures that the language used in test descriptions is not only accurate and informative but also up-to-date with the latest medical findings and trends. By leveraging this rich tapestry of trusted sources, our AI system provides a deeper understanding of each test, fostering informed decision-making and enhanced patient care.

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