METHOD OF OBTAINING STANDARD QUALITY SAMPLE OF SALIVA FACIA FOR CRYSTALLOGRAPHY Russian patent published in 2014 - IPC G01N33/50 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to clinical, laboratory diagnostics, microbiological methods of research, and is aimed at standardisation of saliva analysis by method of wedge dehydration/crystallography. Claimed is method of obtaining standard, quality sample of mixed saliva facia for crystallography with application of portable laboratory device with inbuilt levels on axes X and Y, legs, regulated by height and isolating cover. From 20 to 40 microscope slides are simultaneously placed on the surface of portable laboratory device after obtaining smooth horizontal without inclination angle surface. After that, one sample of mixed saliva in amount 0.02 ml, preliminarily centrifuged for 20 min at 3000 rev/min, is applied on each microscope slide by means of micropipette. As a result a round 1.0 mm high drop of mixed saliva with diameter from 4.0 to 5.0 mm, corresponding to standard parameters, is obtained. Then, standard in dimensions drop on microscope slide placed on the surface of portable laboratory device, adjusted by levels, is dried at room temperature +18…+25°C under isolating cover for 5 hours, with further performance of microscopy of standard quality sample of saliva facia.

EFFECT: obtained sample makes it possible to interpret indices of crystallography without distortions, as standard in volume, dimensions and shape drop of mixed saliva is obtained, and there is no displacement of crystallisation centre and impairment of figures of saliva facia (crystallography pattern) in drop, dried on ideal horizontal surface of the device, ratio of central and peripheral zones of facia exactly correspond to organism's condition, which reduces percentage of false results of crystallography.

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