Hepatitis B Surface Antigen

Overview

  • EPIC Code:
  • IMO18
  • Soft Test Code:
  • HBSAG
Alternate Names
  • HBsAg
  • Hep B Surface Ag
  • Hep B Surface Antigen
  • Hepatitis B Surface Antigen

Specimen Collection & Preparation

Patient Preparation

Patient should discontinue taking Biotin, Vitamin B7, or Vitamin H 48 hours before getting blood drawn.


Specimen Requirements:

-OR-

1.0 mL Serum in a SST Gold Top Tube
Minimum Volume:
0.35 mL Serum*

* This volume does not allow for repeat testing

Processing Instructions:

Centrifuge and separate from serum cells within 24 hours of collection


Transport and Storage:
  • Ambient (18-24°C): 6 Days
  • Refrigerated (2-8°C): 14 Days
  • Frozen (-20° C or colder): 6 Months

Clinical Interpretation

Reference Range:

Negative


Test Comments:

Equivocal and weakly reactive HBsAg results will be confirmed by neutralization and charged accordingly.

Patients taking vitamin supplements containing doses of > 5 mg/day may have falsely decreased test results generated.


Methodology:
  • Chemiluminescence (CL)

Production Schedule

Sites Performed
  • Parkview Regional Medical Center
Days Performed
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Departments
  • Chemistry
Turn Around Time

Same Day/1 to 2 days


Stat Eligible

Coding & Compliance

CDM

01487794 (Reflex 01486398)


CPT Coding

87340 (Reflex 87341)


Medical Necessity May Apply
Medical Necessity Documentation

Duplicate testing on this test is not acceptable per Medicare. Testing to only be done every 365 days.