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how long for strep test results

how long for strep test results

3 min read 31-12-2024
how long for strep test results

Meta Description: Worried about how long it takes to get strep throat test results? This comprehensive guide explains the different types of strep tests, their accuracy, and typical turnaround times, helping you understand what to expect. We cover rapid antigen tests, culture tests, and PCR tests, clarifying the variations in wait times and providing valuable information on managing strep throat symptoms while you wait.


Strep throat, or streptococcal pharyngitis, is a common bacterial infection causing a sore throat. Knowing how long it takes to get strep test results is crucial for timely treatment. The wait time depends on the type of test used. Let's break down the different tests and their associated turnaround times.

Types of Strep Tests and Their Result Times

Several tests can diagnose strep throat. Each has its own speed and accuracy.

1. Rapid Antigen Detection Test (RADT)

  • What it is: This is the most common strep test. A cotton swab collects a sample from the back of your throat. The sample is then tested using a reagent that reacts with strep bacteria. Results are available quickly.
  • How long it takes: Typically, results are available within minutes – often while you’re still at the doctor’s office. However, keep in mind that false negatives (a negative result when you actually have strep) can occur.
  • Accuracy: RADTs are fast but may not be as accurate as other tests. A negative result may need confirmation with a culture test.

2. Throat Culture Test

  • What it is: A throat swab is sent to a laboratory for bacterial culture. This involves growing the bacteria in a petri dish. It allows for definitive identification of the bacteria.
  • How long it takes: Results usually take 1-2 days, sometimes longer depending on the lab's workload and shipping times.
  • Accuracy: Throat cultures are considered the gold standard for strep throat diagnosis, providing highly accurate results.

3. Polymerase Chain Reaction (PCR) Test

  • What it is: PCR tests detect the genetic material (DNA) of the strep bacteria. This is a highly sensitive test.
  • How long it takes: The turnaround time is typically 1-2 days, but can vary depending on the lab. Some rapid PCR tests offer results quicker, potentially within hours.
  • Accuracy: PCR tests are highly accurate and can detect even small amounts of strep bacteria. They are particularly useful when a RADT yields a negative result but strep is suspected.

Factors Affecting Test Result Time

Several factors can affect how long you wait for your strep test results:

  • Lab Processing Times: Labs' workload varies, impacting processing speed. A busy lab may take slightly longer.
  • Test Type: As explained above, rapid tests provide immediate results, while cultures and PCR tests require lab processing.
  • Doctor's Office Efficiency: The speed at which your doctor's office sends the sample to the lab also plays a role.
  • Weekend/Holiday Delays: Testing labs may have reduced hours or be closed on weekends and holidays, causing delays.

What to Do While Waiting for Results

While waiting for results, manage your symptoms:

  • Rest: Get plenty of rest to aid your body's recovery.
  • Hydration: Drink plenty of fluids to prevent dehydration.
  • Pain Relief: Over-the-counter pain relievers, like acetaminophen or ibuprofen, can help manage throat pain. Avoid aspirin in children.
  • Gargle: Gargling with warm salt water can soothe a sore throat.
  • Avoid Irritants: Stay away from smoke, irritants, and acidic foods and drinks.
  • Contact Doctor: If symptoms worsen (high fever, difficulty breathing, severe pain), contact your doctor immediately.

Frequently Asked Questions (FAQs)

Q: My rapid strep test was negative, but I still feel awful. What should I do?

A: A negative rapid strep test doesn't rule out strep throat entirely. Your doctor may recommend a throat culture or PCR test for confirmation. Other infections could be causing your symptoms.

Q: Can I get my strep test results online?

A: Some healthcare providers offer online portals to view test results. Ask your doctor about this option.

Q: How accurate are at-home strep tests?

A: At-home strep tests are available, but their accuracy can vary. Consult your doctor for diagnosis and treatment, even if you use an at-home test.

Conclusion

The time it takes to receive strep throat test results varies depending on the test type. Rapid antigen tests offer quick results, usually within minutes. However, culture tests and PCR tests, while more accurate, take 1-2 days or longer for results. Understanding these timelines helps manage expectations and allows for timely treatment of strep throat. Remember to contact your healthcare provider if you have concerns or worsening symptoms.

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