FIELD:
pharmacology.SUBSTANCE invention can be used to determine the concentration of an anti-
tuberculosis drug in
blood serum. The method for determining the concentration of
bedaquiline in the
blood serum in patients with
tuberculosis or mycobacteriosis is that
whole blood samples are centrifuged at 3000 rpm for 20 minutes, then the
blood plasma is collected in sterile 1.5 mL Eppendorf tubes, then 900 mcL of
acetonitrile are added to 300 mcL of
plasma and centrifuged at 13500g for 15 minutes, then 1 mL of the supernatant is transferred to a chromatographic
vial and make the
assay by UHPLC MS / MS using an Athena UHPLC C18, 1.8 mcM, 120A, 2.1×100 mm
chromatography column, when using an
aqueous solution containing 5 g / L of
ammonium acetate, 25 ml / L of concentrated
acetic acid, 2 ml / L
trifluoroacetic acid as mobile phase A and 100%
acetonitrile as mobile phase B, the concentration of
bedaquiline is determined using a pre-plotted
calibration curve.EFFECT: determination of
bedaquiline in
human blood plasma in a time not exceeding 6 minutes.1 cl, 9 dwg, 6 tbl