In vitro fertilization always takes a lot of time and money, therefore, comprehensive training is needed to achieve the result, namely pregnancy. The future mother and father should be ready to take the necessary tests and a thorough examination.

The quality of performing laboratory tests is crucial in the timely diagnosis of possible problems in a couple, which makes it possible to quickly adjust them. The result of the analysis is different. They are usually valid from 10 days to several months. Before starting preparation for the IVF procedure, the following tests are assigned to the man and woman:

• analysis on the Rh factor and blood group;
• analysis for the detection of HIV infection, hepatitis A and C;
• analysis on syphilis, or Wasserman's reaction, RW.

During pregnancy, the woman has a special responsibility, therefore, more requirements are required for her examination. The future mother should do such research:

1. A smear to identify infections from three genital tract sites (on the surface of the vagina, urethra and uterine cervical canal) allows you to determine the prevailing microflora, the number of leukocytes and the presence of candidiasis.
2. Scraping from the surface of the vaginal walls on the diagnosis of hidden infections using the PCR method (chlamydia, mycoplasma, cytomegalovirus, herpes virus, ureaplasma, gardenella and gonorrhea).
3. Microscopic examination of epithelium taken from the cervix to determine atypical cells (Pap smear).

The state of the patient's endocrine system is of great importance for the body's readiness for bearing. To determine the hormonal profile of a woman, a number of studies are assigned:

• folliculostimuluuriuyya gorun (FSG);
• estradiol;
• prolactin;
• thyrotropic free hormone (TSH);
• thyroid hormones (T3, T4);
• luteinizing hormone (LH);
• DGA-S for the detection of androgens.

To check the level of hormones, blood is given only on an empty stomach in the interval between 3, 8, and also from 19 to 21 days of the menstrual cycle. Obligatory are general clinical tests:

• biochemical blood test for the detection of protein, glucose, creatinine, bilirubin;
• clinical analysis of venous blood;
• coagulogram (diagnosis of blood clotting);
• clinical analysis of urine.

In addition to these tests, a woman needs to undergo a fluorography, ultrasound diagnosis of pelvic organs and an electrocardiogram. In consultation with the therapist, the patient must come with all the above research results. Based on these analyzes, the doctor determines the presence of possible contraindications to the IVF procedure.

A man undergoes an examination in the event that only his spermatozoa, rather than donor ones, are used for artificial insemination. The reproductive health specialist needs the following survey results to determine the ability to conceive:

• Spermogram. It is handed over directly in clinic on an empty stomach on any convenient day. At the same time, such indicators as sperm motility, the presence of antisperm antibodies, leukocytes, infections by the PCR method are analyzed.
• Blood to determine the level of hormones is also given on an empty stomach (TTG, DGA-S, T3, T4, testosterone, prolactin, estradiol, FSH, LH).
• Biochemistry of blood (AST, ALT, GGT, glucose, urea, creatinine, bilirubin).

In addition, a man needs to undergo an examination of the urologist-andrologist, the results of the survey must be submitted together with the analyzes. The term of the assays is different, in each clinic it can differ, so it is necessary to pay special attention to the date of their delivery. All these examinations are mandatory, in addition to them, a number of special examinations and analyzes can be assigned:

• biopsy of the endometrium of the uterus;
• hysteroscopy;
• hysterosalpingography;
• MAP test (for men);
• immunogram.

For women and men over the age of 35, it is recommended to undergo genetic counseling in order to reduce the risk of inherited pathologies or congenital syndromes in the future in the future. A detailed list of analyzes should be clarified in the clinic, where extracorporeal fertilization is planned.