[Assessment of granulopoietic function reserve of the bone marrow by means of the Pyrecol-test in granulocytopenias, immature-cell leukoses and patients under antineoplastic agent therapy].

By injection of the irritating substance Pyrecol the granulopoietic reserve of the function of the bone marrow can be judged. In normal test persons the result is after 8 hours an increase of leucocytes to 176%, when the granulocytes increase to 216%. On the other hand the rate of increase in patients with undifferentiated cell leucosis is statistically highly significantly lower (2alpha = 0.01) with 115 or 132%, respectively. A higher ejection function of the bone marrow correlating with the clinical improvement is to be found after a successful therapy with cytostatics. By this the test informatively contributes to dosage and effectiveness of the therapy with cytostatics and to the course of the disease. In 6 patients with granulocytopenia of unclear genesis examined in the result of the Pyrecol-test 5 passager granulocytopenias with favourable clinical course unambiguously distinguished themselves from a pan-myelophthisis with exitus letalis. The test is easily to be performed and has no essential concomitant a-pearances. By the integral functional evidence it represents a rational supplementation of the locally demarcated morphological substrate of the sternal puncture or bone marrow biopsy, respectively.