If you're planning pregnancy in the US, pre-pregnancy blood tests US guidance comes in two flavours: the ACOG-recommended list, and what your insurance will actually pay for without a fight. They don't always match. This guide maps both, so you can walk into your pre-conception visit knowing exactly what to ask for.
I'll cover the ACOG-aligned panel, the labs that get skipped most often (looking at you, TSH and vitamin D), carrier screening, diabetes risk, and how to read the insurance fine print. You'll also get a patient-script section for the appointment itself.
What ACOG Recommends Before Pregnancy
ACOG Committee Opinion 762 frames pre-conception counselling as the foundation of a healthy pregnancy, not an optional extra. [src] The committee positions the pre-pregnancy visit as a dedicated appointment, separate from the annual well-woman exam, because the questions and labs are different.
The core ACOG pre-conception screening labs include a complete blood count (CBC), blood type and antibody screen, rubella and varicella immunity titres, hepatitis B surface antigen, HIV, syphilis, and urinalysis. Chlamydia screening is offered based on age and risk. Cervical cancer screening should be current per the standard cadence.
So, what labs should I get before pregnancy in the US? Patients who come to me with this question, I walk them through the full pre-conception health checklist and the ACOG panel above, plus the risk-based additions covered next. The CDC's preconception planning guidance mirrors the same priorities and is a useful patient-facing reference. [src]
Diabetes screening (HbA1c or fasting glucose) belongs in this list too if you carry risk factors: BMI over 25, prior gestational diabetes, PCOS, family history, or certain ethnic backgrounds where type 2 diabetes is more common.
Thyroid and Vitamin D, the Often-Skipped Pair
Thyroid-stimulating hormone (TSH, a blood test that reflects how hard your thyroid is being asked to work) is routine for symptomatic or high-risk women. Many OB-GYNs offer it pre-conception regardless, because untreated thyroid dysfunction affects ovulation, miscarriage risk, and early fetal brain development.
The typical lab "normal" range for TSH goes up to about 4.0 mIU/L, but for pre-conception and early pregnancy most clinicians aim lower, often under 2.5 mIU/L. If your TSH lands in the upper half of the normal range and you have symptoms or a family history of thyroid disease, ask for a recheck with free T4 and TPO antibodies.
Vitamin D insufficiency is widespread in the US, especially in women with darker skin, limited sun exposure, or higher BMI. Evidence on vitamin D's direct effect on conception is still mixed, but deficiency is easy to identify and inexpensive to correct.
If your OB doesn't routinely order TSH and 25-hydroxyvitamin D as part of TSH and vitamin D pre-pregnancy work-up, ask for them by name. Frame it as: "I'd like a baseline TSH and vitamin D before we start trying, given my history of [fatigue / family thyroid disease / limited sun / PCOS]." Most clinicians will add them on request.
Carrier Screening, the Genetic Question
ACOG recommends offering carrier screening to all women planning pregnancy, regardless of ethnicity or family history. [src] The pan-ethnic baseline includes spinal muscular atrophy (SMA), cystic fibrosis, and hemoglobinopathies including thalassemias and sickle cell.
Expanded carrier screening panels test for dozens to hundreds of recessive conditions in a single blood draw. They catch more, but they also produce more findings that require partner testing and genetic counselling to interpret. Neither approach is "better"; the right choice depends on your tolerance for ambiguity and your family history.
Partner testing matters because most recessive conditions only affect a baby when both parents are carriers. If your screen comes back positive for a condition, your partner's screen tells you the actual reproductive risk. Ideally, both partners screen before pregnancy, not during it.
Diabetes Risk Screening Before Pregnancy
If you have PCOS, prior gestational diabetes, obesity, or a strong family history, an HbA1c or fasting glucose belongs in your pre-conception panel. Entering pregnancy with undiagnosed prediabetes raises the risk of early gestational diabetes, larger babies, and pregnancy complications.
For women with PCOS specifically, the 2023 International PCOS Guideline recommends a 75g oral glucose tolerance test pre-conception, not just an HbA1c. [src] This is more sensitive than HbA1c alone in this population. Read more on how PCOS raises gestational diabetes risk if PCOS is part of your picture.
What Insurance Usually Covers
Under the Affordable Care Act, most plans cover well-woman visits and several preventive screenings without cost-share at in-network providers. That bucket usually includes HIV screening, hepatitis B, gestational diabetes screening during pregnancy, and contraceptive counselling. The ACOG ACA-aligned panel and rubella/varicella titres are commonly covered too.
Carrier screening is the variable line item. Some plans cover it without question; others require ethnicity-based criteria or a family-history justification; high-deductible plans may pass the full cost through. Vitamin D testing is the other one that often gets denied unless coded against a specific clinical indication.
Before your visit, call the number on the back of your insurance card and ask: "Are pre-pregnancy preventive screenings covered without cost-share under my plan? What about expanded carrier screening, TSH, and vitamin D?" Get the rep's name and a reference number. If anything comes back as not covered later, you have a paper trail.
For uninsured or self-pay patients, county health departments, Planned Parenthood, and some FQHCs offer pre-conception labs on a sliding scale. Direct-to-consumer lab services (Labcorp OnDemand, Quest Health) list cash prices for individual tests and can be cheaper than a hospital draw, but they don't replace a clinician interpreting the results.
Special Cases, When You Need More Than the Basics
If you're 35 or older and have been trying to conceive after 35, an AMH (anti-Müllerian hormone, an estimate of ovarian reserve) and antral follicle count via ultrasound add useful context. These are fertility assessment tools, not pregnancy safety tests, but they shape the conversation about timing.
Two or more miscarriages warrants a recurrent pregnancy loss work-up: antiphospholipid antibodies, lupus anticoagulant, TSH and thyroid antibodies, parental karyotype, and a uterine cavity assessment (saline sonogram or hysteroscopy). Don't wait for three losses if you're over 35.
Chronic conditions (thyroid disease, lupus, type 1 or 2 diabetes, hypertension, epilepsy) need a medication review before conception. Some commonly prescribed drugs (ACE inhibitors, certain anticonvulsants, methotrexate, isotretinoin) need to be swapped well before you stop contraception.
How to Get the Right Tests at Your Visit
Book the visit explicitly as a pre-conception consultation, not as your annual exam. The CPT code is different, the time allocated is longer, and the clinical conversation is more focused.
Bring three things to the appointment: a one-page family history (focus on heart disease, diabetes, blood clots, mental health, genetic conditions), a current medication and supplement list (including herbal products), and a written list of questions.
A sample list to copy into your phone notes: "What's my TSH and is it optimal for pregnancy? Should I get carrier screening, and which panel? Am I rubella and varicella immune? Given my BMI/family history/PCOS, should I add an HbA1c? Are my vaccines up to date?" If your OB doesn't have time for all of this, ask for a follow-up dedicated visit.
If you're reading this from the UK, the pathway is different. NHS pre-conception bloods are narrower by default but free at point of care, with GP and midwife as the typical entry point. See the equivalent UK guide for the NHS panel and how to push for extras.
What This Means for You
The ACOG-aligned pre-pregnancy blood tests US panel isn't a luxury work-up, it's the floor. The labs that get skipped most often (TSH, vitamin D, carrier screening, diabetes risk in PCOS) are also the ones most likely to change a pregnancy outcome. Walking into the visit with a written list and a basic insurance check raises the odds you'll leave with the right orders, not a generic well-woman lab slip.
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Does US insurance cover pre-pregnancy blood tests?+
Many ACA-mandated preventive screenings are covered without cost-share at in-network providers, including HIV, hepatitis B, and well-woman labs. Carrier screening, TSH, and vitamin D are the most variable line items. Call your plan in advance and ask specifically about each test by name.
What if I'm uninsured or on a high-deductible plan?+
County health departments, Planned Parenthood, and FQHCs offer sliding-scale pre-conception labs. Direct-to-consumer services like Labcorp OnDemand publish cash prices for individual tests. Pair self-pay labs with one paid clinical visit to interpret results, rather than ordering labs in isolation.
Does my partner need pre-pregnancy blood tests too?+
Partner testing is most relevant for carrier screening, since recessive conditions usually require both parents to carry. Some clinics do partner-reflex testing (only test the partner if you screen positive); others screen both upfront. Discuss the approach at the visit.
How far in advance of TTC should I get pre-pregnancy bloods?+
Three months before you plan to start trying is the standard target. That gives time to act on results: treat a thyroid issue, correct vitamin D, complete carrier screening with partner, update vaccines (some live vaccines need a one-month wait), or switch medications.
What if my OB-GYN won't order the labs I ask for?+
You can ask for the clinical reason in writing, request a second opinion, or see a different provider. Many telemedicine pre-conception consultations exist specifically for this gap. Bring published guidelines (ACOG CO 762, the 2023 International PCOS Guideline) as references.
References
Citations referenced inline above link to their primary sources (NHS, NICE, CDC, ACOG, ASRM, peer-reviewed journals).
