1 on/under pain of death idiom. 2  a pain in the arse/backside idiom. 3  a pain in the ass/butt, at a pain in the arse/backside idiom.  a pain (in the neck) idiom.
In addition to the differences in replication method, transmission risk is higher with Hep B as it can be sexually transmitted, whereas generally not with Hep C. The large majority of adult patients exposed to Hep B clear it, whereas with Hep C adults who are exposed and clear are the minority.
Infrequently, the Hep B titer can be used to refer to a less common test known as the Hepatitis B Surface Antigen test. This test is sometimes used to check for the presence of the Hepatitis B disease, something that is uncommon in the US and that is typically ordered under the direction of a medical provider.