Leukocyte Alkaline phosphatase ; True is
LAP (Leukocyte Alkaline phosphatase):
Screening test used to distinguish CML from other myloproliferative disorder because LAP ↑ ses in all myeloproliferative disorder, except CML
                          ↓
So ↑ses in polycythemia, myelofibrosis.
Screening test used to distinguish CML from Myeloproliferative disorders
LAP increases in all myeloproliferative disorder except CML
LAP increases in polycythemia vera
All of the above