Before a Blood Test, X-ray, Ultrasound, CT, or MRI: The English You Need

After the doctor says "Let's order some tests," the rest of the visit usually goes like this: you take an order to a lab, imaging center, or pharmacy; the front desk asks what test it is, whether you're fasting, and whether you have any metal implants. Each test has a short English script, but a single word (contrast, fast, claustrophobic) can throw you off. Memorize a few sentences for each of the five common test categories — blood, urine, X-ray, ultrasound, CT, MRI — and the whole testing process gets much smoother.

This article teaches English communication for healthcare situations. It is not medical diagnosis or treatment advice. Any rules about eating, medication, or activity before or after a test should follow your local clinician or imaging center.

Core Vocabulary

Must-Know Phrases

Scheduling / check-in:

1. "I'd like to schedule [BLANK]."
   • a blood test
   • an MRI of my knee
2. "I'm here for my [10 a.m.] [BLANK]."
   • blood draw
   • chest X-ray
3. "I have a referral / order from Dr. [BLANK]."

Asking the rules:

4. "Should I fast before the test?"
5. "How long should I fast for?"
6. "Can I drink water?"
7. "Should I take my medication that morning?"
8. "Will I need contrast?"
9. "How long will it take?"
10. "Is there any prep I need to do beforehand?"

During the test:

11. "Could you tell me what's going to happen, step by step?"
12. "I get a little claustrophobic — could we take a break if I need to?"
13. "My arm is hard to draw from — please use my left arm."

Results:

14. "When will the results be ready?"
15. "How will I get the results?"
16. "Could you send a copy to my doctor and to me?"

Key Phrases by Test Type

Blood test

• "I'm here for a blood draw."
• "It's a fasting test — I haven't eaten since 9 p.m. last night."
• "I tend to get a little dizzy after blood draws."
• "Could I lie down during the draw?"
• Common tests: CBC (complete blood count), metabolic panel, A1C, cholesterol panel.

Urine test

• "Where do I leave the urine sample?"
• "Is this a clean catch?"
• "How much do you need?"
• Common tests: urinalysis, urine culture.

X-ray

• "I need a chest X-ray today."
• "Are you pregnant or could you be pregnant?" (almost always asked) → "No, I'm not / Yes, I might be."
• "Please remove anything metal — necklaces, bras with underwire." (instructions you should be able to follow)

Ultrasound

• "It's an abdominal ultrasound — fasting required."
• "For the pelvic ultrasound you may need a full bladder."
• "The gel will feel cold."

CT scan

• "Will the CT use contrast — IV or oral?"
• "I'm allergic to iodine contrast — please note that."
• "How long will I be in the machine?"

MRI

• "Do I have any metal in my body — implants, pacemaker, surgical clips?" (you will be asked — list them out)
• "I'll need to take off anything metal, including jewelry and credit cards."
• "It can be loud — they'll give me earplugs."
• "I get claustrophobic — could I have a mild sedative?"
• "How long does the scan last?"

Awkward vs Natural Phrasing

Situational Dialogue: An MRI at an Imaging Center

Receptionist: Hi, do you have an order for today?

You: Yes, an MRI of my right knee. My referring doctor is Dr. Patel.

Receptionist: Have you ever had any metal implants, surgeries with clips, or a pacemaker?

You: I had ACL surgery in 2018, so I have surgical screws in my knee. No pacemaker, no other implants.

Technician: That's fine for MRI, but the screws may show up on the images. The scan will take about 30 minutes. The machine is loud — you'll have earplugs and a button to press if you need to stop.

You: Thank you. I get a little claustrophobic — could we do a quick test entry first to see how I feel?

Technician: Absolutely. Let's do that.

You: When will the results be ready, and how will I get them?

Technician: Usually 24–48 hours. They'll go to Dr. Patel and to your patient portal.

Replaceable Sentence Templates

1. "I'd like to schedule [BLANK]."
   • a blood test
   • an abdominal ultrasound
   • an MRI of my [body part]
2. "Should I [BLANK] before the test?"
   • fast
   • drink lots of water
   • skip my morning medication
3. "I'm allergic to [BLANK]; please note that."
   • iodine contrast
4. "I get [BLANK]; could we [BLANK]?"
   • claustrophobic; take a break if needed
   • dizzy after blood draws; have me lie down
5. "When will the results be ready, and how will I get them?"
6. "Could you send a copy to my doctor and to my patient portal?"

Quick Practice

Say each of these in natural English.

1. Check in for a 10 a.m. blood draw.
2. Ask how long you need to fast before the test.
3. Mention an iodine contrast allergy.
4. Say you get a little claustrophobic and ask whether you can take a break.
5. Ask when the results will be ready.

Sample Answers

1. I'm here for my 10 a.m. blood draw.
2. How long should I fast for before this test?
3. I'm allergic to iodine contrast.
4. I get a little claustrophobic — could we take a break if I need to?
5. When will the results be ready?

Copy-Ready Summary Sheet

Fill this in before scheduling or checking in for any test.

Medical test summary
Test ordered: __________
Referring doctor: __________
Date and time: __________
Location: __________

Prep instructions confirmed:
- Fasting: yes (___ hours) / no
- Water allowed: yes / no
- Morning medications: take / skip / partial
- Bowel prep / bladder prep: __________
- Anything to bring: ID / insurance / referral / list of meds

Questions for technician / receptionist:
- How long will the test take?
- Will contrast be used? IV / oral
- Any allergies to flag: __________
- Metal implants / pacemaker / pregnancy: __________
- Claustrophobia / dizziness / vasovagal history: __________

After the test:
- Results expected by: __________
- Sent to: my doctor / patient portal / me directly
- Follow-up appointment booked: yes / no — date: __________

Related Reading

• Always mention current medications before a test: see Medication History in English: How to Describe Your Drugs, Doses, and Timing
• Flag allergies before contrast dye: see Drug Allergies and Side Effects in English: How to Tell Doctors and Pharmacists Clearly

Reminder: This article teaches English communication for healthcare situations. It is not medical diagnosis or treatment advice. Any rules about eating, medication, or activity before or after a test should follow your local clinicians.