Frequently Asked Questions

Most Frequently Asked Questions

It depends. Since the criteria change daily, please refer to the CDC link for the most up-to-date information. https://www.cdc.gov/coronavirus/2019-ncov/symptoms-testing/testing.html

No. All COVID-19 testing will be done by appointment only. Please register at www.nhanhoa.org to schedule an appointment.

  1. Register at www.nhanhoa.org/patient-registration. The registration process takes about 2-4 minutes. All the questions asked will help us in prioritizing your appointment and collecting data for reporting purposes. All your information will be securely saved in our Electronic Health Record system.
  2. A representative will call you back within 24-72 hours to give you an appointment date and time that’s convenient for you. Please refrain from asking them other questions besides your availability to lessen the impact on our phone system and resources.
  3. A confirmation email will be sent to you right after the call confirming your appointment, and you will be assigned a reference number. Please print out or take a picture of this reference number. You WILL be asked to show this reference number on your appointment day.
  4. Show up at the testing site about 15 minutes prior to your appointment time at Nhan Hoa Health Center, 7761 Garden Grove Blvd, Garden Grove, CA 92841. Please make sure to not be late to ensure the process goes smoothly.

Please email covid19-info@nhanhoa.org with subject line “Reschedule” and give us your full name, date of birth, the ID used during registration and your new date and time for another appointment. If we can’t accommodate the time specified, we will call you back for another time. If we can accommodate, you will receive an email confirmation of your new appointment.

The test will be provided to you free of charge. Nhan Hoa Health Center will cover all the costs associated with this test.

Highly unlikely. The Drive-Through testing protocols that Nhan Hoa adopted have been used, tested, and proven by several testing sites in many different states. You will be safely situated inside your car with your windows up the entire time, with the exception of when our doctor is ready to collect your specimen.

Your test will be administered while you are in your car. You will enter the testing site according to the map (Download: Drive-Thru Testing Site Plan). Make sure to keep your windows up at all times unless asked to lower your window. You will be asked to show your ID (used at the time of registration) and your reference number. When you arrive at the sample collection station, you will be asked to lower your window. Our doctor will collect the specimen from your nose. You will be given a printout about the test and what to expect next. You will then exit the testing site.

Click on image to enlarge.

Our partnered labs will get us your results within 24 – 72 hours. If your result is positive, our doctor will call you right away to advise you on what to do next.


If you haven’t heard from us after 5 business days have passed, please email covid19-info@nhanhoa.org with subject line “Test Result Inquiry” and give us your full name, date of birth and the ID used during registration. We will get back to you within 24 hours. Please refrain from calling us to help lessen the impact on our phone system and resources.

If your result is negative, an email will be sent to the email that you gave us during registration. If your result is positive, our doctor will personally call you to walk you through what to do next.

If your result is positive, we will report to public health.

According to the CDC, yes. A negative result means the virus was not detected in the patient’s sample, which is possible in the early stages of infection.

If you have a positive test result, it is very likely that you are infected with 2019-nCoV. There is a very small chance that this test can give a positive result that is incorrect (false positive). However, our doctor will personally call you and work with you to develop a care plan based on the test results and other factors from your medical history.

A negative test result means that the virus was not found in your sample. It is possible for this test to give a negative result that is incorrect (false negative) in some people with the Covid-19 infection. Therefore, while a negative test most likely means you do not the 2019-nCoV infection, your primary healthcare provider will consider the test result together with all other aspects of your medical history in deciding how to care for you.

Our partnered labs use CDC 2019-nCoV Real-Time Reverse Transcriptase (RT)-PCR Diagnostic Panel and TaqPath COVID-19 Multiplex Diagnostic Solution. Both of these test platforms have been approved for use under the Emergency Use Authorization (EUA) from the FDA.

Download EUA CDC-2019-nCoV (RT)-PCR
Download EUA TaqPath-COVID-19

contact info

Office Address

  • 7761 Garden Grove Blvd.
    Garden Grove, CA 92841

Phone Number

  • +1 714 898 8888

Email Address

contact info

Office Address

  • 7761 Garden Grove Blvd.
    Garden Grove, CA 92841

Phone Number

  • +1 714 898 8888

Email Address

© 2018 NH Health Center