Where used:
| Data Set | National Renal Data Set - Renal Care | references in description OBSERVATION DATE (HEPATITIS B ANTIGEN) |
| Data Set | National Renal Data Set - Transplant | references in description OBSERVATION DATE (HEPATITIS B ANTIGEN) |
| Data Element | OBSERVATION DATE (HEPATITIS B ANTIGEN) | references in description OBSERVATION DATE (HEPATITIS B ANTIGEN) |