Turn on more accessible mode
Skip Ribbon Commands
Skip to main content
Turn off Animations
Navigate Up

22860 Respiratory Syncytial Virus Antigen, Rapid

Respiratory Syncytial Virus Antigen, Rapid
Test Code: RS-AG
Synonyms/Keywords
​RSV Antigen
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
​No Nasopharyngeal wash or aspirate or  wire shaft nasopharyngeal swabs​ Sterile, leakproof container or nasopharyngeal swabs in viral transport media​ ​ 2 to 4 mL or  nasopharyngeal swabs​ 0.5 mL ​ 0.5 mL or one nasopharyngeal swab​
Collection Processing Instructions
Respiratory Syncytial Virus Rapid Antigen (RS-AG) testing is no longer performed on the Marshfield or DTC campuses. If needed, order Respiratory Syncytial Virus Nucleic Acid Test (RSVNAT) or Influenza A and B and Respiratory Syncytial Virus Nucleic Acid Test PCR (ABRNAT) as alternative tests.
Specimen Stability Information
Specimen Type Temperature Time
​Nasopharyngeal secretions Refrigerate​ Deliver to lab ASAP​
Rejection Criteria
Calcium alginate, cotton, or wood-shafted swabs
Non-refrigerated specimens​
Specimens other than nasopharyngeal secretions​
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Chippewa Falls​ ​Monday through Friday ​Less than 2 hours​ ​Binax NOW RSV Rapid EIA Antigen Test​
​Flambeau Hospital ​Monday through Sunday ​Less than 2 hours​ ​Binax NOW RSV Rapid EIA Antigen Test​
​Ladysmith ​Monday through Friday ​Less than 2 hours​ ​Binax NOW RSV Rapid EIA Antigen Test​
Minocqua​ ​Monday through Sunday ​Less than 2 hours​ ​Binax NOW RSV Rapid EIA Antigen Test​
Test Information
​The Rapid EIA RSV antigen test has a low predictive value when RSV prevalence in the community is low. This test uses a rapid antigen detection method that is not as sensitive as the RSV nucleic acid test (NAT) also offered (see ABRNAT). It is however a more rapid and readily available test.
Reference Range Information
Performing Location Reference Range
All Performing Sites Negative for RSV antigen​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
87420​ ​ ​ ​​Respiratory Syncytial Virus ​
Synonyms/Keywords
​RSV Antigen
Ordering Applications
Ordering Application Description
​Centricity Ag. RSV, Rapid​
​Cerner ​RSV Antigen, Rapid
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
​No Nasopharyngeal wash or aspirate or  wire shaft nasopharyngeal swabs​ Sterile, leakproof container or nasopharyngeal swabs in viral transport media​ ​ 2 to 4 mL or  nasopharyngeal swabs​ 0.5 mL ​ 0.5 mL or one nasopharyngeal swab​
Collection Processing
Respiratory Syncytial Virus Rapid Antigen (RS-AG) testing is no longer performed on the Marshfield or DTC campuses. If needed, order Respiratory Syncytial Virus Nucleic Acid Test (RSVNAT) or Influenza A and B and Respiratory Syncytial Virus Nucleic Acid Test PCR (ABRNAT) as alternative tests.
Specimen Stability Information
Specimen Type Temperature Time
​Nasopharyngeal secretions Refrigerate​ Deliver to lab ASAP​
Rejection Criteria
Calcium alginate, cotton, or wood-shafted swabs
Non-refrigerated specimens​
Specimens other than nasopharyngeal secretions​
Reference Range Information
Performing Location Reference Range
All Performing Sites Negative for RSV antigen​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Chippewa Falls​ ​Monday through Friday ​Less than 2 hours​ ​Binax NOW RSV Rapid EIA Antigen Test​
​Flambeau Hospital ​Monday through Sunday ​Less than 2 hours​ ​Binax NOW RSV Rapid EIA Antigen Test​
​Ladysmith ​Monday through Friday ​Less than 2 hours​ ​Binax NOW RSV Rapid EIA Antigen Test​
Minocqua​ ​Monday through Sunday ​Less than 2 hours​ ​Binax NOW RSV Rapid EIA Antigen Test​

​Marshfield Labs
1000 North Oak Avenue
Marshfield, WI 54449-5795

Laboratory Reference Services

  • Marshfield Labs Customer Service
    • Toll-free: 800-222-5835
    • Direct Dial: 715-221-6700
    • Internal: ext. 16700
    • Fax: 715-221-6215
    • Email: mlcussev@marshfieldclinic.org
    • Web Portal Helpline (technical support):866-522-2611

Billing Questions

  • Marshfield Center Patient Assistance Center (PAC)
    • Fee estimates, assistance with available government programs (e.g Badger Care): 800-782-8581 ext. 94475
    • Insurance eligibility, insurance referrals, managed care requirements that include Preadmission Review (PAR): 800-782-8581 ext. 75559
  • Patient Financial Services (PFS)
    • Marshfield Center: Billing statements(questions/concerns): 800-782-8581 ext. 90700
    • Marshfield Labs Billing Department: Billing statements, insurance eligibility/contracts, fee estimates (Non-Sendouts), credit card payments: 800-782-8581 ext. 90616
    • St. Joseph's Hospital of Marshfield (a Ministry affiliate): Internal ext. 77164
For sites other than Marshfield Center, please contact your local PAC (e.g. Diagnostic &Treatment Center, Flambeau Hospital, Lakeview Medical Center)

Toxicology Services

  • Toll-free: 800-331-3734
  • Direct Dial: 715-389-3734
  • Fax: 715-389-3737
  • Billing questions: 715-389-0616
  • Customer Service Email: forensic.toxicology@marshfieldclinic.org
  • Web Portal Helpline (technical support): 866-522-2611

For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
87420​ ​ ​ ​​Respiratory Syncytial Virus ​
For most current information refer to the Marshfield Laboratory online reference manual. Sat Mar 15 2025 21:47:18 GMT+0000 (Coordinated Universal Time)