Organ Scans
Vascular
Upper Limb
Lower Limb & Spine
Procedures
Body & Organs
Every scan, MRI, CT and injection, type a body part or a service name.
Patient information
Most scans need no preparation at all. A few need an empty stomach or a full bladder. Find your scan below and you will know exactly what to do, and when.
49 of 75 scans
need no preparation at all
Fasting
four hours, still water is fine
Full bladder
water in the hour before
Instructions by email
sent with your booking confirmation
Arrive five minutes early
99 Harley Street, W1G 6AQ
Find your scan
Search for your scan or choose a preparation type. Each row shows the one thing to do; follow the link for the full instructions on that scan's page.
Showing all 75 scans and treatments
Head & neck
Thyroid ultrasound
No preparation needed. Eat, drink and take medication as normal.
Neck ultrasound
No preparation needed. Eat, drink and take medication as normal. No fasting for a neck ultrasound.
Salivary gland ultrasound
No preparation needed. Eat, drink and take medication as normal.
Face ultrasound
No preparation needed. Eat, drink and take medication as normal.
Pregnancy
Early pregnancy scan
An empty bladder. Your scan is performed internally (transvaginally) unless you ask otherwise, so please empty your bladder just before the scan. If you would prefer a transabdominal scan through the tummy, tell us when you book, drink a litre of water 45 to 60 minutes before and keep your bladder full. You can eat and drink as normal.
Dating scan
An empty bladder. Your scan is performed internally (transvaginally) unless you ask otherwise, so please empty your bladder just before the scan. If you would prefer a transabdominal scan through the tummy, tell us when you book, drink a litre of water 45 to 60 minutes before and keep your bladder full. You can eat and drink as normal.
NIPT
No fasting needed. Eat and drink as normal. A comfortably full bladder helps the scan part of the visit.
Gender & wellbeing scan
No special preparation. Eat and drink as normal. A comfortably full bladder can help, but it is not essential at this stage.
Anomaly scan
No special preparation. Eat and drink as normal. A small snack beforehand can encourage your baby to move into a helpful position.
Growth scan
No special preparation. Eat and drink as normal. A small snack beforehand can encourage your baby to move.
Presentation scan
No special preparation. Eat and drink as normal. You do not need a full bladder for this scan.
Cervical length scan
Empty your bladder. A transvaginal cervical scan is clearest with an empty bladder. Please use the toilet just before your appointment.
Guided injections
Knee injections
A short questionnaire before you attend. A pre-procedure questionnaire is sent with your booking confirmation: medication, allergies, blood thinners and diabetes. Please complete it before your appointment.
Shoulder injections
A short questionnaire before you attend. A pre-procedure questionnaire is sent with your booking confirmation: medication, allergies, blood thinners and diabetes. Please complete it before your appointment.
Hip injections
A short questionnaire before you attend. A pre-procedure questionnaire is sent with your booking confirmation: medication, allergies, blood thinners and diabetes. Please complete it before your appointment.
Elbow injections
A short questionnaire before you attend. A pre-procedure questionnaire is sent with your booking confirmation: medication, allergies, blood thinners and diabetes. Please complete it before your appointment.
Wrist & hand injections
A short questionnaire before you attend. A pre-procedure questionnaire is sent with your booking confirmation: medication, allergies, blood thinners and diabetes. Please complete it before your appointment.
PRP injections
A short questionnaire before you attend. A pre-procedure questionnaire is sent with your booking confirmation: medication, allergies, blood thinners and diabetes. Please complete it before your appointment.
Calcific tendinopathy & barbotage
A short questionnaire before you attend. A pre-procedure questionnaire is sent with your booking confirmation: medication, allergies, blood thinners and diabetes. Please complete it before your appointment.
Ankle & foot injections
A short questionnaire before you attend. A pre-procedure questionnaire is sent with your booking confirmation: medication, allergies, blood thinners and diabetes. Please complete it before your appointment.
Breast clinic
Breast ultrasound
No preparation needed. Eat, drink and take medication as normal. Deodorant does not affect an ultrasound.
Breast surgeon consultation
Wear a two-piece outfit. A separate top makes the examination simpler. A gown is provided.
one-stop breast clinic
Wear a two-piece outfit. A separate top makes the examination and scan simpler. A gown is provided.
Breast implant check
No preparation needed. Eat, drink and take medication as normal.
Women's health
Pelvic ultrasound
An empty bladder. Your scan is performed internally (transvaginally) unless you ask otherwise, so please empty your bladder just before the scan. If you would prefer a transabdominal scan through the tummy, tell us when you book, drink a litre of water 45 to 60 minutes before and keep your bladder full. You can eat and drink as normal.
Ovarian screening
An empty bladder. Your scan is performed internally (transvaginally) unless you ask otherwise, so please empty your bladder just before the scan. If you would prefer a transabdominal scan through the tummy, tell us when you book, drink a litre of water 45 to 60 minutes before and keep your bladder full. You can eat and drink as normal.
Abdomen & pelvic
Fast for four hours. No food for four hours before your scan. Water is fine; avoid fizzy drinks and chewing gum.
Endometrial lining
An empty bladder. Your scan is performed internally (transvaginally) unless you ask otherwise, so please empty your bladder just before the scan. If you would prefer a transabdominal scan through the tummy, tell us when you book, drink a litre of water 45 to 60 minutes before and keep your bladder full. You can eat and drink as normal.
Fibroid ultrasound
An empty bladder. Your scan is performed internally (transvaginally) unless you ask otherwise, so please empty your bladder just before the scan. If you would prefer a transabdominal scan through the tummy, tell us when you book, drink a litre of water 45 to 60 minutes before and keep your bladder full. You can eat and drink as normal.
Female health check
Fast for four hours. For the clearest view of the gallbladder. Water is fine; avoid fizzy drinks.
Follicle tracking
An empty bladder. Please empty your bladder just before the scan. You can eat and drink as normal.
Abdomen & organs
Abdomen
Fast for four hours. No food for four hours before your scan. Water is fine, but avoid fizzy drinks and chewing gum, which add gas.
Liver & gallbladder
Fast for four hours. No food for four hours before your scan. Water is fine; avoid fizzy drinks.
Kidneys & urinary tract
Arrive with a comfortably full bladder. Drink about half a litre of water in the hour before, and avoid emptying your bladder.
Bowel ultrasound
Avoid food for four hours. An empty stomach reduces gas. Water is fine; avoid fizzy drinks and chewing gum. No bowel preparation is needed.
Hernia
No preparation needed. Eat, drink and take medication as normal.
Men's health
Vascular
DVT: leg
No preparation needed. Eat, drink and take medication as normal.
DVT: arm
No preparation needed. Eat, drink and take medication as normal.
AAA screening
No fasting needed. Eat and drink as normal. Avoiding a large meal or fizzy drinks for a couple of hours beforehand gives the clearest view, but is not essential.
Carotid artery ultrasound
No preparation needed. Eat, drink and take your medication as normal. There is no fasting and no injection.
Arterial duplex: legs
No fasting needed. Eat, drink and take your medication as normal.
Muscles & joints
Shoulder
No preparation needed. Eat, drink and take medication as normal.
Knee
No preparation needed. Eat, drink and take medication as normal.
Elbow & forearm
No preparation needed. Eat, drink and take medication as normal.
Hand & wrist
No preparation needed. Eat, drink and take medication as normal.
Hip
No preparation needed. Eat, drink and take medication as normal.
Calf
No preparation needed. Eat, drink and take medication as normal.
Ankle
No preparation needed. Eat, drink and take medication as normal.
Foot
No preparation needed. Eat, drink and take medication as normal.
REMS bone density
No preparation needed. Eat and drink as normal. Avoid calcium supplements on the day of the scan.
General & upper body
Lumps, bumps & soft tissue
No preparation needed. Eat, drink and take medication as normal.
Armpit / axilla
No preparation needed. Eat, drink and take medication as normal.
Liver elastography (FibroScan)
Fast for two to three hours. No food before your appointment. Small sips of water are fine. Eating shortly before the test raises blood flow to the liver and can falsely raise the stiffness reading.
Children's Health
Baby hips
Feed your baby beforehand. A feed shortly before the appointment helps your baby stay settled. Bring a spare nappy and a muslin.
Baby spine
Feed your baby beforehand. A settled, recently fed baby lies still more easily. Bring a spare nappy and a muslin.
Boy testes
No preparation needed. Your son can eat and drink as normal. Babies can be fed shortly before.
Child abdomen & pelvic
A light stomach if possible. Avoid food for around four hours if your child can manage it; babies can be scanned just before a feed. Water is fine.
Child kidneys & urinary tract
A comfortably full bladder. Your child can eat as normal; a drink of water before arriving helps fill the bladder.
Child pelvic
A comfortably full bladder. Two or three glasses of water in the hour before, and no wee until after the scan.
Child chest / thorax
No preparation needed. Your child can eat and drink as normal.
Child neck / thyroid
No preparation needed. Your child can eat and drink as normal.
Child breast
No preparation needed. Your child can eat and drink as normal.
Child armpit / axilla
No preparation needed. Your child can eat and drink as normal.
Child soft tissue lumps
No preparation needed. Your child can eat and drink as normal.
Child vascular malformation
No preparation needed. Your child can eat and drink as normal.
Child hip
No preparation needed. Your child can eat and drink as normal.
Child knee
No preparation needed. Your child can eat and drink as normal.
Child ankle
No preparation needed. Your child can eat and drink as normal.
Child elbow
No preparation needed. Your child can eat and drink as normal.
Child foot
No preparation needed. Your child can eat and drink as normal.
Child hand & wrist
No preparation needed. Your child can eat and drink as normal.
Child shoulder
No preparation needed. Your child can eat and drink as normal.
No scan matches that search. Call us on 020 3904 4441 and we will tell you how to prepare.
Five kinds of preparation
Ultrasound sees through water and soft tissue but not through gas or bone. Preparation simply clears the view.
01 · 49 scans
Eat, drink and take your medication exactly as normal, and come as you are.
Muscles, joints, the neck, thyroid, breast and skin lie close to the surface, so the probe sees them clearly whatever you have eaten.
02 · 8 scans
No food for four hours before your scan. Water is fine, but avoid fizzy drinks and chewing gum.
Food and swallowed air fill the bowel with gas, which blocks the view of the liver, gallbladder and pancreas. An empty stomach also keeps the gallbladder full and easy to see.
Scans that need this
03 · 5 scans
Drink around a litre of water 45 to 60 minutes before your appointment, and try not to empty your bladder until after the scan.
A full bladder lifts the bowel out of the way and acts as a window onto the womb, ovaries, prostate and bladder. Your scan below shows the exact amount.
Scans that need this
04 · 9 scans
Empty your bladder just before the scan. You can eat and drink as normal.
Gynaecological and pelvic scans, including early pregnancy and dating scans, are performed transvaginally as standard, and the probe sits closest to the womb and ovaries when the bladder is empty. If you would prefer a scan through the tummy, ask when you book and follow the full-bladder guidance instead.
Scans that need this
05 · 8 scans
Eat and drink normally. Tell us when you book if you take blood thinners or are diabetic.
Steroid can raise blood sugar for a few days. Before PRP, avoid ibuprofen, naproxen and similar painkillers for a week before and after; paracetamol is fine.
Scans that need this
Your day, in order
When you book
Your instructions arrive
Scan-specific preparation is sent with your booking confirmation. If anything is unclear, call us on 020 3904 4441.
The day before
Gather what you have
Earlier scan reports, blood results, a list of your medication and, for pregnancy scans, your dates and maternity notes.
Four hours before
Last meal, if you are fasting
Only for scans that need fasting: abdomen, liver and gallbladder, bowel and the health checks. Still water is fine all the way through.
45 to 60 minutes before
Start drinking, if you need a full bladder
For kidney and bladder scans, or if you have asked for a pelvic scan through the tummy. Drink around a litre and hold on until after the scan.
Five minutes early
Arrive at 99 Harley Street
Check in at reception and settle in the lounge. Step-free access is available.
During your scan
Results explained as you go
Your specialist talks you through what they see on screen; the written report usually follows the same day.
What to wear
Comfortable clothes that let you uncover only the part we need to see.
What to bring
Each one helps your specialist answer your question more fully. If you have none of them, just come.
Your checklist0 of 5
Tick things off as you gather them.
Earlier reports and results
Scan reports, X-rays or blood results help us compare. Useful, never essential.
A list of your medication
Especially blood thinners, steroids and fertility or hormone treatment.
Your dates
For pregnancy and gynaecology scans: the first day of your last period, or an IVF transfer date.
Your insurance authorisation
If you are claiming, bring the authorisation number from your insurer.
Your question, written down
What you most want answered. Your specialist will make sure it is.
Questions, answered
Anything else? Call 0203 904 4441, a real person answers, and a clinician can call you back.
It depends on the examination. Abdominal scans usually need a few hours of fasting; pelvic scans often need a comfortably full bladder; most musculoskeletal, thyroid and breast scans need no preparation at all. Clear, scan-specific preparation instructions are sent with your booking confirmation, and our team is a phone call away if anything is unclear.
Yes. Still water is fine right up to your appointment, and it keeps you comfortable. Avoid fizzy drinks and chewing gum, which add gas to the bowel and can hide the organs we need to see.
Yes, in almost every case. Take your medication as normal with a little water, unless your doctor has told you otherwise. If you take blood thinners or are diabetic and are booked for a guided injection or a fasting scan, tell us when you book so we can advise.
Comfortably full, not bursting. Drink around half a litre to a litre of still water in the hour before, depending on your scan, and try not to empty your bladder until afterwards. If it becomes painful, empty a little: a partly full bladder is better than an uncomfortable one.
Call us or tell the team when you arrive. Many scans can still go ahead, and your specialist will tell you honestly whether the view will be good enough or whether a later appointment would serve you better.
Of course. Partners are very welcome at pregnancy scans, hearing a heartbeat is a moment to share, and you may bring a companion or chaperone to any appointment. For paediatric scans a parent or guardian stays in the room throughout. A professional chaperone can also be arranged on request.
We are at 99 Harley Street, London W1, in the heart of the capital’s medical district. The clinic is a short walk from Regent’s Park, Great Portland Street and Oxford Circus stations, with Baker Street and Bond Street close by. Step-free access is available; if you have any mobility requirements, let us know when booking and we will have everything ready.
Ready when you are
Same-day and next-day appointments at 99 Harley Street. No GP referral needed, results explained before you leave.
This assistant answers questions about this website only and is not medical advice. In an emergency call 999.