Common pre-op tests
Your practice decides what you need. These are the tests patients most often report being asked for before cosmetic surgery:
| Test | What it checks |
|---|---|
| Complete blood count (CBC) | Hemoglobin and hematocrit (oxygen-carrying capacity), platelets, white cells |
| Metabolic panel | Kidney function, electrolytes, blood sugar |
| Pregnancy test | May be offered when the result would change care, with informed consent. Discuss the facility’s policy; ASA does not recommend mandatory testing. ASA pregnancy-testing guidance |
| Clotting tests (PT/INR, PTT) | How well your blood clots; often requested if you have a bleeding history |
| EKG | Heart rhythm; often required above a certain age or with heart risk factors |
| Nicotine (cotinine) test | Some practices test because nicotine sharply raises wound-healing risk |
| HbA1c | Blood-sugar control, if you have diabetes or prediabetes |
Why hemoglobin matters so much
Liposuction, BBL, tummy tucks and combined procedures cause real blood loss, and large-volume liposuction removes fluid along with fat. Starting surgery with low hemoglobin leaves less reserve, which can mean more fatigue, dizziness, a longer recovery, or the need for a transfusion.
Ask your surgical and anesthesia teams how they evaluate hemoglobin for your health and planned procedure. A clinic’s cutoff is not a guarantee of safety, and abnormal results need medical evaluation rather than simply reaching a target number.
- What is your minimum hemoglobin for my procedure?
- Will you recheck it, and when?
- If I'm below it, is my deposit refundable or transferable? (Deposit terms)
If your hemoglobin or iron is low
- Talk to a doctor early. Low hemoglobin has causes (heavy periods, diet, other conditions) that are worth knowing about, not just fixing for surgery.
- Oral iron is slow. It usually takes weeks to move your numbers. Starting the week before rarely works.
- IV iron is an option some doctors offer when time is short or tablets aren't tolerated.
- Can't swallow large pills? A common question in patient groups. Ask a pharmacist about liquid, chewable or smaller forms rather than skipping doses.
- Food helps over time: red meat, beans, lentils, dark leafy greens and fortified cereals, with vitamin C to help absorption.
- Tell your surgeon about every supplement you take. Some supplements can affect bleeding or interact with medicines; ask your team which to continue or stop. What surgeons ask you to pause
Medical clearance
A preoperative evaluation documents your health, risks and recommendations for the surgical team; it does not guarantee that surgery or anesthesia is safe. It may come from your own primary-care doctor or from a clinic that offers pre-surgical evaluations.
- Bring your surgeon's clearance form, your lab results and a full medication list to the visit.
- If you have a heart, lung, clotting, blood-sugar or blood-pressure condition, you may also need specialist clearance. Ask at the consultation, not weeks later.
- Ask the practice to confirm in writing that your clearance was received and accepted. Patients often report waiting for this.
- A clearance doesn't override the surgeon. The surgeon or anesthesiologist can still postpone surgery.
A simple timeline
Ask what you'll need
Which labs, the hemoglobin cut-off, clearance and specialist requirements, and the refund terms if you aren't cleared.
Early check if you've been anemic
A CBC through your own doctor gives time to treat low iron.
Official pre-op labs and clearance
Usually within a few weeks of surgery. Send results promptly and get written confirmation.
Recheck if required
Some practices repeat the blood count shortly before surgery.
The full six-week pre-op countdown
General education only; your surgeon and anesthesiologist decide what you need. Sources: American Society of Plastic Surgeons patient resources; American Society of Anesthesiologists patient information.
Specific references: ASA: pregnancy testing and consent; ASA: preanesthesia evaluation. These sources cover the topics named; individual treatment plans vary.