Useful to aid in the distinction between the myeloproliferative neoplasm polycythemia vera (PV) and other secondary erythrocytosis. Mutations in JAK2 have been implicated in polycythemia vera, essential thrombocythemia, and myelofibrosis as well as other myeloproliferative disorders.
REFRIGERATE (5 Days)
JAK2, JAK 2, JAK Mutation, JAK2 Exon 12, Polycythemia Vera, Myeloproliferative Neoplasm (MPN)
Useful when evaluating patients with signs and symptoms compatible with a connective tissue disease, especially those patients with muscle pain and limb weakness, concomitant pulmonary signs and symptoms, Raynaud phenomenon, and arthritis.
Do not collect from PTs receiving B12 injection therapy within the last week. CRITICAL FROZEN
FREEZE (14 Days) CRITICAL
Antibodies to Jo 1 Antigen, Autoantibodies to Jo 1 Antigen, Histidyl-tRNA Synthetase Antibodies, Polymyositis Antibodies, Jo 1 Antigen, Jo 1 Antibodies
Useful for identifying the presence of urine as a cause for accumulation of fluid in a body compartment and measuring the ultrafiltration capacity of the peritoneal membrane in patients receiving peritoneal dialysis.