UCSF Navigation Bar

UCSF Departments of Pathology & Laboratory Medicine Home Page

Lab Manual for UCSF Clinical Laboratories

Lab Manual for SFGH

Internal Resources

Click here for more information about laboratory operations and procedures

If you have additional questions regarding this test, please call: 415-353-1667

Search Our Test Menu

POCT Influenza Virus

Item Value
Approval req'd? No
Available Stat? Yes
Test code
Test group Influenza
Performed by Authorized Point of Care testing site staff
In House Availability During clinic hours
Method Immunoassay
Collection Instructions Nasal Swab Sample:
For proper test performance, use the swabs supplied in the kit.
Insert sterile swab into the nostril that presents the most secretion under visual
inspection. Gently rotate the swab inward, until resistance is met at the level of the
turbinates (less than one inch into the nostril). Rotate the swab a few times against the
nasal wall.

Nasal Wash or Aspirate Sample:

1. For Older Children and Adults
With the patient's head hyper-extended, instill about 2.5 ml of sterile saline into one nostril with a syringe. To collect the wash, place specimen container directly under the nose with slight pressure on the upper lip. Tilt the head forward and allow the fluid to flow into the specimen container. Repeat for the other nostril, collecting the fluid into the same specimen container.

2. For Younger Children
Sit child on parent's lap facing forward, with the child's back against the parent's chest.The parent should wrap one arm around the child in a manner that will restrain the child's body and arms.

Fill an aspiration bulb or bulb syringe with up to 2.5 mL of sterile, normal saline (depending on the size of the child), and instill the saline into one nostril while the head is tilted back.

Release the pressure on the bulb to aspirate the specimen back into the bulb. Transfer the specimen into specimen container. Repeat the process for the child's other nostril and transfer the specimen into the same specimen container.
Container type Swab or clean container
Sample type Nasal swab or nasal wash
Normal range Negative
Synonyms flu
Additional information This test does not differentiate between influenza types A and B.

Test results must be evaluated in conjunction with other clinical data available

A negative test result may occur if the level of antigen in a sample is below the detection limit of the test or from improper sample collection.

Negative test results are not intended to rule-out other non-influenza viral infections.

See also Respiratory Virus DFA
Last Updated 11/17/2011 4:02:31 PM
Entry Number 1114
UCSF home page UCSF home page About UCSF Search UCSF UCSF Medical Center