Zika Virus Test (IMAGE) Washington University School of Medicine Caption A Washington University researcher holds a piece of paper coated with tiny gold nanorods that can be used to test blood for Zika virus. If a patient whose blood is being tested has come into contact with Zika virus, the blood will contain substances that react with a protein coating the nanorods. The test paper doesn't need to be refrigerated, and test results are available in about 15 minutes. Credit James Byard Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.