Urgent Care for COVID and Flu Symptoms: What to Expect

Can urgent care test for both COVID and flu at the same visit?

Yes. Most urgent care clinics offer rapid combination respiratory panels that detect SARS-CoV-2, influenza A, and influenza B from a single nasal swab. Results are typically available in 15–30 minutes. Some clinics also offer RSV testing, which is especially relevant for young children and older adults.

COVID and flu cause overlapping symptoms — fever, body aches, fatigue, and respiratory symptoms — making clinical differentiation without a test unreliable 1Ref 1Alemi F, Vang J, Wojtusiak J, et al. (2022).Differential diagnosis of COVID-19 and influenza.Significant symptom overlap between COVID-19 and influenza makes clinical differentiation without a test unreliable; supports need for combined testing. Testing matters because the antiviral medications differ: oseltamivir (Tamiflu) for influenza and oral antivirals such as nirmatrelvir-ritonavir for COVID, each with their own eligibility criteria and timing requirements.

How soon do antivirals need to be started?

Timing is important for both:

• Influenza antivirals (oseltamivir, baloxavir) are most effective when started within 48 hours of symptom onset. The CDC identifies adults 65 and older, children under 2, people with chronic medical conditions, and pregnant individuals as priority groups for early antiviral treatment 2Ref 2Centers for Disease Control and Prevention (2024).Treating Flu with Antiviral Drugs.Identifies high-risk groups (adults ≥65, children <2, pregnant individuals, people with chronic conditions) who should receive priority antiviral treatment for influenza within 48 hours of symptom onset.
• COVID antivirals also have an early treatment window. A clinician will review your eligibility based on your health history and how recently symptoms began.

If your symptoms started 24–36 hours ago and feel like either flu or COVID, going to urgent care that day is a reasonable choice — waiting may reduce your options.

What if the test comes back negative for both?

Rapid tests have a non-trivial false-negative rate, particularly early in illness when viral load is still building. If your symptoms are severe or worsening despite a negative result, a clinician may recommend supportive care and watchful waiting, or order a more sensitive PCR test.

Other respiratory illnesses — strep throat, RSV, or other viruses — can produce similar symptoms and are within urgent care's scope to evaluate. A negative COVID and flu test does not necessarily mean everything is fine if you feel quite unwell.

What supportive care should I use at home?

Whether your illness turns out to be COVID or flu, general supportive measures help:

• Rest and stay home while symptomatic to avoid spreading illness.
• Hydration — fevers and reduced appetite increase your fluid needs.
• Fever and pain management with acetaminophen or ibuprofen, following label directions.
• Monitor for worsening symptoms — particularly increasing shortness of breath or chest tightness, which would warrant a return visit or emergency care 3Ref 3Centers for Disease Control and Prevention (2024).Influenza Antiviral Medications: Summary for Clinicians.Clinical guidance on antiviral treatment timing, indications for hospitalization, and management of severe respiratory illness including warning signs warranting emergency care.

When is the ER the right place rather than urgent care?

Urgent care is appropriate for mild to moderate respiratory illness. Go to an emergency room if you experience:

• Difficulty breathing at rest or breathing significantly faster than usual
• Persistent chest pain or pressure
• Confusion, disorientation, or inability to stay awake
• Lips or fingertips turning blue
• Severe dehydration — unable to keep down any fluids 3Ref 3Centers for Disease Control and Prevention (2024).Influenza Antiviral Medications: Summary for Clinicians.Clinical guidance on antiviral treatment timing, indications for hospitalization, and management of severe respiratory illness including warning signs warranting emergency care