Hepatitis Labs

Question 1

HBsAg

Answer 1

you’re infected with HBV

Question 2

Anti-HBs

Answer 2

you’re immune to HBV (Surface antibody)

Question 3

Anti-HBc (total)

Answer 3

You’re exposed in general to HBV (Core antibody IgG + IgM)

Question 4

Anti-HBcIgM

Answer 4

You’re acutely exposed to HBV (core antibody IgM only) =

Question 5

HBeAg

Answer 5

Active replication of HBV (early antigen)

Question 6

Anti-HBe

Answer 6

HBV is no longer replicating (early antibody)

Question 7

HBV DNA

Answer 7

quantifies the amount of HBV DNA

Question 8

You’re infected with HBV

Answer 8

HBsAg

Question 9

You’re immune to HBV

Answer 9

Anti-HBs

Question 10

You’re exposed to HBV, acute or chronic

Answer 10

Anti-HBc total (IgM+IgG)

Question 11

You’re exposed to HBV acutely

Answer 11

Anti-HBc IgM

Question 12

There’s active HBV replication

Answer 12

HBeAg

Question 13

HBV replication has stopped

Answer 13

Anti-HBe

Question 14

Amount of HBV DNA present

Answer 14

HBV DNA test

Question 15

HAV-Ab/IgM

Answer 15

Hep A acute or recent infection, rises within a week

Question 16

HAV-Ab/IgG

Answer 16

Hep A previous exposure, rises after one month and can persist for year

Question 17

Hepatitis C RNA detection

Answer 17

Used to CONFRIM current/active HCV infection from Anti-HCV-IgM

Question 18

Anti-HCV (IgM)

Answer 18

First HCV screening test, not protective and many false positives

Question 19

Acute/recent Hep A infection

Answer 19

HAV-Ab/IgM

Question 20

Past Hep A exposure

Answer 20

HAV-Ab/IgG

Question 21

Confirmatory test for HCV infection

Answer 21

Hepatitis C RNA detection

Question 22

First HCV screening test

Answer 22

Anti-HCV (IgM)

Question 23

Delta agent serology

Answer 23

Detects HDV, done if known HBV infection, cannot distinguish acute vs. chronic

Question 24

Detect HDV

Answer 24

delta agent serology