Newborn screening (heel prick, hearing, heart)

Newborn screening is a set of quick tests done in the first days of life to catch rare but treatable conditions: a drop of blood from the baby's heel, a hearing test, and a pulse-oxygen check for heart defects. The decision is whether to accept all of them or opt out of any.

Should our baby have the newborn screening tests?

In short: Parents choose between 2 main approaches: Accept all; Opt out. Evidence: well established. Guidance and evidence agree. The real question is whether you'll follow it. Best settled: around the birth.

Evidence
Well established
Best settled
Around the birth
Part of
Pregnancy to first birthday

Newborn screening: what are the options?

Parents usually land on one of these 2 approaches.

  1. 1. Accept all

    The baby has all the standard screening tests.

  2. 2. Opt out

    You decline some or all of the tests.

Newborn screening: what does the evidence say?

Well established. Guidance and evidence agree. The real question is whether you'll follow it. (Settled (details vary by state))

Every US state runs newborn screening, built around a federal recommended list of conditions that is not law, so each state chooses which to screen: the list has about 35 core conditions and 26 secondary ones (counts differ slightly by source and date). The tests are a heel-prick blood spot, a hearing screen, and a pulse-oximeter check for critical congenital heart disease. The hearing goals are screening by 1 month, diagnosis by 3 months and early intervention by 6 months. Most states let parents refuse for religious reasons, many allow personal exemptions, and rules differ on how parents are informed and on how long blood spots are kept, so ask your hospital

Sources

What else is worth knowing?

These tests look for rare conditions that are far easier to treat when found early, often before any symptoms appear. The blood test covers dozens of conditions, depending on where you live. Ask how and when you will get the results.

Questions to ask each other

  • What do we know about what these tests look for?
  • Would we want to opt out of any, and why?
  • Who will check that the results get to us afterward?

More in Newborn medical choices

First published 2026-10-03. Last updated 2026-10-05. General information, not medical advice.