Table 5.

Categories used to describe samples in PARR interpretation.

Results Category	Definition
B-cell	Clonal amplification with one or more IgH primer sets.
T-cell	Clonal amplification with one or more TCRγ primer sets.
IgH and TCRγ rearrangement	Clonal amplification of similar amplitude with both IgH and TCRγ primer sets.
Reactive	Polyclonal amplification with all PARR primer sets.
Dominant peak only	Dominant peak seen with one or more PARR primer sets with no clear clonal peak.
No peak	Poor or negative amplification with PARR primer sets alongside good amplification of both DNA amplifiability controls. The presence of few lymphocytes in the sample cannot be distinguished from failure to amplify a clonal rearrangement.
Inadequate sample	Poor or negative amplification with one or both DNA amplifiability controls alongside poor or negative amplification with PARR primer sets.