COVID-19 Testing: What to Expect

Bellaire ER is open 24/7 for emergency care at 5302 Bellaire Blvd, Bellaire, TX 77401. For a COVID-19 testing question, call (713) 660-0001 to confirm which tests are currently available, expected result timing and how results will be delivered.

Below is a plain-language guide to which test fits your situation, when symptoms mean you should skip testing and come straight to the ER, and what to expect from your results.

Which COVID-19 test do you need?

• Rapid antigen test. Detects proteins from the virus. Antigen tests are generally less sensitive than NAATs, including PCR, and a single negative antigen result does not rule out infection. Follow the test instructions and ask a healthcare professional about repeat testing or a NAAT when appropriate.
• NAAT, including PCR. Detects the virus’s genetic material and is generally more sensitive than antigen testing. A clinician can help choose a test based on symptoms, recent infection, the reason for testing and available options.
• Antibody (blood) test. Shows evidence of a past infection. It is not used to diagnose a current infection.

For general information about test types and result timing, see the CDC testing overview. For a neutral overview of how these test types compare, see the MedlinePlus guide to COVID-19 testing from the National Library of Medicine, or its detailed explanation of how COVID-19 virus tests are performed.

When should you consider testing?

Discuss testing with a healthcare professional when:

• You have symptoms such as fever, cough, sore throat, congestion, fatigue, body aches, or a new loss of taste or smell.
• You had close contact with someone who tested positive.
• You need documentation of a result for work, travel, or a medical procedure.

Symptoms of respiratory infections overlap, and symptoms alone cannot reliably distinguish flu from COVID-19. Testing can help identify the cause. If your illness turns out to be influenza, see our flu treatment page for what care looks like.

For testing questions about a child, call Bellaire ER to confirm current options. The American Academy of Pediatrics maintains practical COVID-19 guidance for children and families on HealthyChildren.org.

Red flags: go to the ER now

Testing can wait when emergency symptoms cannot. Seek immediate emergency care for the following signs. Call 911 for severe breathing difficulty, persistent chest pain or pressure, confusion or inability to wake, pale, gray, or blue-tinged lips or skin, or if the person cannot travel safely:

• Trouble breathing or shortness of breath at rest
• Persistent chest pain or pressure
• New confusion, or inability to wake up or stay awake
• Pale, gray or blue-tinged lips, skin or nail beds
• Signs of severe dehydration: little or no urination, dizziness, inability to keep fluids down

These signs can indicate dangerously low oxygen levels, pneumonia or other complications that need immediate evaluation. Bellaire ER has on-site CT, X-ray, ultrasound and laboratory capabilities to support emergency evaluation. The physician selects needed tests. Result timing, treatment and any need for outside services or hospital transfer depend on the patient’s condition.

ER, urgent care, or telemedicine?

• Telemedicine works well if you mainly need a symptom assessment, testing advice, or follow-up on a positive result and you are breathing comfortably. Book a telemedicine visit.
• The ER is the right place for any red-flag symptom above, for high-risk patients (older adults, pregnancy, immunocompromise, significant heart or lung disease) who are getting worse, and for anyone who needs imaging or IV treatment.
• Not sure where you fall? Our when to visit the ER guide walks through the decision.

What to expect when you come in

1. Arrival for emergency care. Bellaire ER is open 24/7 for walk-in emergency care. Before a testing-only visit, call to confirm current test availability. Bring a photo ID and your insurance card if you have one. Most major insurance plans are accepted, and self-pay options are available.
2. Brief screening. A clinician reviews your symptoms, exposure and risk factors, and checks your vital signs.
3. Sample collection. If a test is ordered, the care team collects the appropriate sample.
4. Results. Ask the care team which test is being used, the expected turnaround and how you will receive the result. Confirm any documentation requirements before testing.

Understanding your results

The CDC testing guidance explains how to interpret results, and its treatment overview explains why higher-risk patients should seek treatment advice promptly.

• Positive: The test detected the virus; this can reflect a current or recent infection. Discuss precautions and treatment with a healthcare professional. If you are at higher risk of severe illness, seek prompt treatment advice rather than waiting for symptoms to worsen.
• Negative antigen test: A single negative result does not rule out infection. Follow the test instructions and current CDC guidance on repeat testing, or ask your clinician whether a NAAT is appropriate.
• Positive after recovery: Some tests, especially NAATs, can remain positive after an infection. Tell the clinician about any recent positive test so they can advise on the next step.

Bellaire ER is open 24/7 at 5302 Bellaire Blvd, Bellaire, TX 77401. Call (713) 660-0001, get directions, or book a telemedicine visit.

Frequently asked questions

When should I go to the ER instead of a pharmacy test site for COVID-19?

Choose the emergency room when COVID-19 symptoms include shortness of breath, chest pain, oxygen saturation below 92 percent, inability to keep fluids down, high fever in an infant under 3 months, or new confusion.

Does a negative home antigen test rule out COVID-19 or flu?

No. Rapid antigen tests can miss early viral shedding, and a negative test never overrides emergency red flags like labored breathing, dehydration, or chest pressure.

Do I need an appointment for respiratory evaluation at Bellaire ER?

No appointment is required. Walk in 24/7 at 5302 Bellaire Blvd for physician evaluation and on-site laboratory testing.

Clinical references & peer-reviewed sources

1. CDC: Testing for COVID-19
2. CDC: COVID-19 Signs and Symptoms