Most urgent care clinics can run a surprisingly wide range of tests, from X-rays and blood panels to rapid strep and COVID swabs. You can typically get results for many of these within minutes to a few hours, making urgent care a practical option when you need answers fast but aren’t dealing with a life-threatening emergency. The exact menu varies by location, but here’s what you can generally expect.
Rapid Tests for Infections
Rapid diagnostic tests are a core strength of urgent care. These use a simple swab or small sample and return results on-site, usually within 15 to 30 minutes. The most common rapid tests screen for:
- Strep throat (a throat swab)
- Influenza A and B (a nasal swab)
- COVID-19 (nasal swab, with rapid antigen results in about two hours)
- Mononucleosis (a blood sample from a finger prick)
For COVID-19 specifically, many clinics offer both a rapid antigen test and a rapid PCR test, each returning results within roughly two hours. If higher accuracy is needed, a standard PCR swab can be sent to a reference lab with results back in about 24 hours. The same send-out option applies to strep: if a rapid strep test comes back negative but your symptoms are suspicious, the clinic can send a throat culture for confirmation.
Blood Work and Metabolic Panels
Urgent care clinics can draw blood and run a range of panels. Some results come back on-site within the visit; others are sent to a reference lab and typically return within 24 hours.
A basic metabolic panel checks your blood sugar, calcium, electrolytes, creatinine, and kidney function. A comprehensive metabolic panel adds cholesterol, protein levels, and liver function markers. These are useful for evaluating dehydration, blood sugar problems, or unexplained fatigue. Complete blood counts, which measure your white and red blood cells and platelets, are also standard at most locations and help identify infections or anemia.
Urine Tests
Urinalysis is one of the most frequently ordered tests at urgent care. A simple urine sample can help diagnose or rule out urinary tract infections, kidney problems, and dehydration. Beyond standard urinalysis, clinics commonly offer:
- Pregnancy tests using a urine sample
- Urine drug screens for employment or other purposes
- Creatinine tests to assess kidney function
- Microalbumin tests that detect early signs of kidney damage by measuring small amounts of protein in urine
Results for a basic urinalysis are often available during your visit. Drug screens and more specialized urine tests sometimes need to go to a reference lab.
X-Rays and Imaging
Most urgent care clinics have X-ray machines on-site, which is one of the biggest reasons people choose urgent care over a regular doctor’s office. Common X-rays include:
- Extremity X-rays for suspected fractures or dislocations in hands, wrists, arms, ankles, knees, and feet
- Chest X-rays to diagnose pneumonia, bronchitis, or other lung infections
- Spine X-rays to check for vertebral injuries after a fall
- Abdominal X-rays for intestinal blockages, kidney stones, or swallowed foreign objects
X-rays can also help identify arthritis, joint degeneration, and sinus infections. For children, they’re commonly used to check for fractures, pneumonia, or swallowed objects. Results are typically read within your visit, so you’ll leave knowing whether something is broken or if your lungs look clear.
Heart and Lung Assessments
Many urgent care clinics are equipped to perform an EKG (electrocardiogram), which records the electrical activity of your heart. This is useful if you’re experiencing chest discomfort, an irregular heartbeat, or shortness of breath that could be heart-related. An EKG takes only a few minutes, and the results are available almost immediately.
That said, an EKG at urgent care is a screening tool, not a substitute for emergency cardiac care. If the results suggest something serious, the clinic will direct you to an emergency room for advanced workup. Pulse oximetry, which clips onto your finger to measure blood oxygen levels, is also widely available and helps evaluate breathing difficulties from asthma, pneumonia, or other respiratory illnesses.
STI and Sexual Health Testing
Urgent care clinics can test for most common sexually transmitted infections, including HIV, chlamydia, gonorrhea, syphilis, herpes, and hepatitis A, B, and C. Testing usually involves a urine sample, blood draw, or swab depending on the infection.
Some STI results, like a rapid HIV test, can come back within 20 to 30 minutes. Others, particularly chlamydia and gonorrhea, are processed at a reference lab and take one to three days. If you need testing but don’t have a primary care provider or can’t get a timely appointment, urgent care is a reasonable option. The CDC also maintains a locator tool at gettested.cdc.gov to help find nearby testing sites.
Pediatric-Specific Tests
Children can get most of the same tests at urgent care, including rapid strep, flu swabs, X-rays, and urinalysis. Some pediatric-focused or family urgent care locations also perform RSV (respiratory syncytial virus) testing, which is especially relevant during fall and winter months for young children with breathing trouble.
Blood lead level screening is another test available at many clinics. The initial screen is a quick finger-prick that provides fast results. If the level is at or above the CDC’s reference value of 3.5 micrograms per deciliter, a second test using a blood draw from the vein is needed to confirm. How quickly that confirmation needs to happen depends on the level: mildly elevated results should be confirmed within three months, while levels at 45 or above need follow-up within 48 hours.
What Urgent Care Typically Cannot Do
The biggest diagnostic gap between urgent care and an emergency room is advanced imaging. Most urgent care clinics do not have CT scanners, MRI machines, or ultrasound equipment. If you need any of those, you’ll be referred to a hospital or imaging center. Emergency rooms also have the ability to run more specialized blood tests, provide sedation for painful procedures, and monitor patients continuously.
As a practical rule: if you need a broken bone confirmed, a lung infection checked, a strep test, or bloodwork for something non-emergency, urgent care can handle it and save you hours of waiting. If you need imaging beyond a standard X-ray, or if your symptoms suggest a stroke, heart attack, severe abdominal emergency, or major trauma, an emergency room is the right call.