Full Process Precautions and Key Preparation Checklist for IVF

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"Doctor, I'm about to start my cycle. What are the key things I need to pay attention to during the entire IVF process?" — This is one of the most common questions in reproductive clinics. As a reproductive specialist, I have compiled the most frequently asked clinical precautions into this checklist, hoping to help you avoid unnecessary detours.

I. Overview of Core Precautions for Each Stage of IVF

IVF is not a single procedure but a continuous process composed of multiple steps. Each stage has specific precautions. The table below provides a quick overview:

II. Why These Details Matter for Success

Assisted reproduction is a precisely regulated process, and deviations in any step can affect the final outcome. In clinical practice, I have seen many cases of repeated failure due to neglecting details, such as:

• Irregular medication timing — Ovulation induction drugs need to be injected strictly by the hour. Delays or advances can alter follicle development synchrony, leading to fewer eggs retrieved or reduced egg quality.
• Ignoring test validity — Results for chromosome tests and infectious disease screenings are typically valid for 6–12 months. If expired, retesting is required before filing and starting the cycle.
• Excessive rest after transfer — Prolonged bed rest is not only unhelpful but may also affect uterine blood flow and increase the risk of thrombosis. Normal activity will not cause the embryo to fall out.

Understanding the medical logic behind these steps helps you cooperate better with treatment. Below is a breakdown by stage.

III. Stage-by-Stage Process & Timeline Planning

1. Preliminary Preparation Stage (1–3 Months Before Starting the Cycle)

What needs to be done:

• Female: AMH, FSH, LH, E2, antral follicle count (AFC), thyroid function, chromosome karyotype, infectious diseases (Hepatitis B, Hepatitis C, HIV, syphilis), hysteroscopy (for repeated implantation failure or abnormal ultrasound findings).
• Male: Semen analysis (2–3 times), sperm morphology, chromosome karyotype, Y chromosome microdeletion, infectious disease screening.
• Both: Blood type, coagulation function, liver and kidney function, electrocardiogram.

Timeline reference:

• AMH can be tested anytime and is not affected by the menstrual cycle.
• FSH, LH, and E2 are best drawn on days 2–4 of the menstrual cycle.
• Chromosome results take 10–20 working days; schedule this first.
• Semen analysis requires 2–7 days of abstinence; two consecutive tests provide more reliable results.

2. Ovulation Induction Stage (Approximately 10–14 Days)

Medication precautions:

• Inject at a fixed time daily (error < 30 minutes); set an alarm.
• Avoid vigorous exercise (running, aerobics, intercourse) to prevent ovarian torsion or premature ovulation.
• Return to the clinic every 2–3 days for follicle monitoring and blood tests; the doctor adjusts dosage based on results.

Diet and lifestyle: Maintain a normal, balanced diet; no need for "heavy supplementation." A high-protein diet (eggs, fish, soy products) benefits follicle development but should not be excessive.

3. Egg Retrieval Surgery (Approximately 15–20 Minutes)

Egg retrieval is performed under intravenous anesthesia, with a 2–4 hour observation period afterward. Key points:

• Do not drive or operate precision equipment for 24 hours after anesthesia.
• Record post-operative urine output. If urine output decreases significantly, bloating worsens, or abdominal pain is severe, be alert for OHSS (Ovarian Hyperstimulation Syndrome).
• Avoid bathing, swimming, and intercourse for 2 weeks after surgery; showering is allowed.

4. Embryo Culture and Transfer (3–6 Days After Egg Retrieval)

D3 or Blastocyst?

• D3 embryo: Shorter culture time, lower laboratory requirements, suitable for cases with few eggs or embryos.
• Blastocyst: Cultured to D5/D6, allowing selection of embryos with higher developmental potential, but carries the risk of culture failure with no embryo for transfer.

Number of embryos to transfer: Determined by age, embryo quality, and uterine conditions. In China, 1–2 embryos are typically transferred, with single embryo transfer becoming a trend to reduce the risk of multiple pregnancies.

5. Luteal Support Stage (Continued Medication After Transfer)

After transfer, progesterone supplementation (oral/vaginal gel/injection) is required, usually continuing until 10–12 weeks of pregnancy. Key points:

• Do not stop medication on your own — Even with mild bleeding or abdominal pain, consult your doctor first.
• Blood test for hCG 12–14 days after transfer to confirm pregnancy.
• If hCG is positive, continue luteal support and schedule an ultrasound 1–2 weeks later to check for a fetal heartbeat.

IV. 6 Most Easily Overlooked Details

V. 6 Most Common Pitfalls

VI. Key Examination Indicators Explained (With Reference Ranges)

The following indicators are most commonly used by reproductive specialists to assess ovarian function and design protocols:

Note: Reference ranges may vary slightly between laboratories and testing methods; refer to your specific report. Abnormal indicators do not necessarily mean IVF is impossible, but they guide the doctor to adjust the strategy.

VII. Frequently Asked Questions (QA)

Q1: Can I still do IVF if my AMH is low?

Yes. Low AMH indicates fewer eggs, but not necessarily poor egg quality. The doctor will comprehensively evaluate AMH, FSH, and AFC to choose a mild stimulation or short protocol, aiming to obtain usable embryos from the limited follicles.

Q2: What additional preparations are needed for advanced maternal age (≥38 years) IVF?

In addition to routine tests, it is recommended to add: chromosome screening (both partners), hysteroscopy, comprehensive immune panel, and coagulation function. The risk of aneuploidy in eggs increases with age; PGT-A (chromosome screening) can help select chromosomally normal embryos and reduce miscarriage rates.

Q3: Do I need to "prepare" my body before IVF?

No "special preparation" is needed, but it is recommended to: start folic acid supplementation (400–800 μg/day) 3 months in advance, quit smoking and alcohol, maintain a regular sleep schedule, and control weight (BMI 18.5–24). Both excessive weight loss and obesity are unfavorable for pregnancy.

Q4: What tests does the male partner need?

Semen analysis (2 times), sperm morphology, DNA fragmentation index (DFI), chromosome karyotype, Y chromosome microdeletion, and infectious disease screening. Male tests are relatively simple but crucial for assessing fertilization methods and genetic risks.

Q5: What should I do if I bleed after transfer?

Light brown or pink discharge is common and may be related to implantation bleeding or cervical irritation. If bleeding is similar to menstrual flow or accompanied by abdominal pain, contact your doctor promptly. Do not stop luteal support medication on your own.

Q6: How long does the entire IVF process take?

From the initial consultation to the end of transfer, it usually takes 2–3 months. If PGT or frozen embryo transfer is involved, the cycle may extend to 4–6 months. The exact duration depends on the protocol chosen, embryo culture progress, and individual response.

VIII. Special Population Precautions

• Polycystic Ovary Syndrome (PCOS): Higher risk of OHSS during stimulation; closely monitor follicles and hormone levels, and consider freezing all embryos if necessary.
• Diminished Ovarian Reserve (DOR): It is advisable to start the cycle as soon as possible without repeatedly waiting for the "optimal time." Mild stimulation or natural cycles may be considered.
• Repeated Implantation Failure (RIF): Systematically investigate uterine factors, immune abnormalities, thrombophilia, and endometrial receptivity; do not blindly repeat transfers.
• Uterine Fibroids / Adenomyosis: Decide whether to treat in advance based on the fibroid's location, size, and whether it affects the uterine cavity.

Knowledge Base ID: REP-2025-039 · Revision Date: 2025.03