Grouping Sorting String And Numerical Fields

I've got a report built and I'm trying to figure out how sorting and grouping works. I can group the report by Patient, Albumin and it groups as I would expect.

Patient Date Albumin
Adams, John 01/28/2007 4.1
Adams, John 12/30/2007 3.9
Adams, John 01/15/2007 3.2
Barker, Mark 01/18/2007 4.3
Barker, Mark 01/22/2007 4.1
Barker, Mark 01/05/2007 3.9

However, when I try to group by Albumin, Patient, it just sorts by Albumin.
Patient Date Albumin
Barker, Mark 01/18/2007 4.3
Adams, John 01/28/2007 4.1
Barker, Mark 01/22/2007 4.1
Adams, John 12/30/2007 3.9
Barker, Mark 01/05/2007 3.9
Adams, John 01/15/2007 3.2

What I'm looking for is this:
Patient Date Albumin
Barker, Mark 01/18/2007 4.3
Barker, Mark 01/22/2007 4.1
Barker, Mark 01/05/2007 3.9
Adams, John 01/28/2007 4.1
Adams, John 12/30/2007 3.9
Adams, John 01/15/2007 3.2

Is this something that can be done with grouping and sorting?

Thanks,
Chad