Investigations to help find the right treatment for you

In order to determine the cause of infertility and the subsequent planning of the treatment cycle, your doctor will carry out a series of investigations. This will help us to diagnose the cause of infertility, (if there is a cause) and the right course of treatment.

We also now offer Fertility MOTs: please click here to find out more.

Female investigations

Type Test When Why
Blood Test Follicular Stimulating Hormone (FSH) Follicle-stimulating hormones (FSH) stimulate the production of eggs during the first half of the menstrual cycle. Measuring the amounts of FSH and other hormones (luteinizing hormone, estrogen, and progesterone) in your blood stream, and your partners, can be useful when identifying the causes of infertility.     Day 2 – 4 of menstrual cycle. Check ovarian reserve and determine dose of stimulation drugs.
Luteinising Hormone (LH)
Oestradiol (E2)
Progesterone Mid luteal phase (i.e. day 21 or seven days before expected menstrual cycle. Check ovulation
Rubella Anytime Check immunisation
Hepatitis B Anytime  
Hepatitis C  
Human Immune Deficiency Virus (HIV)  
Scans/X-Rays Ultrasound Scan (Pelvis) Anytime Check for abnormalities in the pelvis.
Hysterosalpingography (HSG). Within 10 days of menstrual cycle. Checks for abnormalities within the cavity and tubal status.
Hysterosalpingo-contrast sonography (HyCoSy).
Day surgery Laparoscopy and Dye test  


Male Investigations

Type Test When Why
Blood Test Hepatitis B Anytime  
Hepatitis C
Human Immune Deficiency Virus (HIV)
Sperm Test Semen Analysis Anytime (abstinence must be no less than two and no more than five days). Determine sperm quality (count, motility, morphology).

Meet the team

Meet our team of dedicated and expert professionals.

Read more

What to expect

Helping you understand the process involved in receiving fertility treatment.

Read more

Our history

Find out why we are the trusted choice for a wealth of patients.

Read more

NHS Backing

Guy's and St Thomas' is a world renowned NHS Foundation Trust Hospital.

Read more