What Is Delayed Cord Clamping, and Should It Be in Your Birth Plan?

You've spent months researching car seats, nursery paint colors, and the exact right swaddle technique — so it makes sense you're now deep-diving into what happens in those first few minutes after your baby arrives. 👶

One thing worth having on your radar? Delayed cord clamping. It's one of those birth plan decisions that seems small but can have a real impact on your little one's health from day one. Here's everything you need to know.

📝 In this article:

What is delayed cord clamping?

Delayed umbilical cord clamping (often called DCC) is exactly what it sounds like: instead of cutting the umbilical cord within seconds of birth, your care team waits — anywhere from one to several minutes — before clamping and cutting it.

Why does that matter? Because in those minutes after birth, blood is still flowing from the placenta through the cord and into your baby. After birth, blood flow in the umbilical arteries and veins usually continues for a few minutes. The additional blood volume transferred to the baby during this time is known as placental transfusion. [1]

So by waiting, your baby gets a top-up of oxygen-rich blood, iron, and stem cells that they would otherwise miss out on. Think of it as your placenta's parting gift. 🎁

It's worth knowing that you might see this referred to as "optimal cord clamping" or "deferred cord clamping" — they all mean the same thing. Some medical bodies prefer the term "deferred" because it suggests a planned policy, rather than "delayed," which might imply something happening later than ideal. [1]

What does delayed cord clamping do?

To understand the benefits of delayed cord clamping, it helps to know what's actually happening biologically.

For a term baby, postnatal placental transfusion provides an additional 80–100 ml of blood. At birth, blood volume per kilogram of body weight increases to around 90 ml/kg, but this rise is reduced by 20–35% if the cord is clamped immediately. [1]

That's a significant chunk of blood being transferred — or not — depending on when the cord is cut. Within a few hours, the additional plasma from placental transfusion is lost to the circulation, leaving a high red cell mass. This is quickly broken down and the iron stored. Immediate cord clamping potentially deprives the term baby of 20–30 mg/kg of iron, sufficient for the needs of a newborn baby for around 3 months. [1]

Beyond iron, the delay also supports your baby's cardiovascular transition. At birth, the umbilical circulation slows and pulmonary vascular resistance falls, rapidly increasing pulmonary blood flow. Continued flow in the umbilical vein and arteries at birth may be part of the physiological mechanisms assisting the baby as it makes this transition from fetal to neonatal circulation.

What does delaying cord clamping until white mean?

You might have come across the phrase "delayed cord clamping until white." This refers to waiting until the umbilical cord changes color — from its initial blue-purple hue to a pale white — which signals that the blood has fully transferred from the placenta to the baby. This is essentially a visual cue that the cord has finished its job, and it typically aligns with the cord stopping its pulsation. It's another way of describing physiological or complete cord clamping.

What are the benefits of delayed cord clamping?

Let's get into the good stuff — because the benefits of delayed cord clamping are genuinely impressive. From iron stores to brain development, those extra few minutes on the clock can make a real difference to your baby's health from day one.

For baby (term infants)

The benefits of delayed cord clamping for full-term babies are well-documented. In term infants, delayed umbilical cord clamping increases hemoglobin levels at birth and improves iron stores in the first several months of life, which may have a favorable effect on developmental outcomes. [2]

Iron deficiency in early infancy is no small thing. Iron deficiency in the first few months of life is associated with neurodevelopmental delay, which may be irreversible. Getting that iron boost at birth can help set your baby up for healthy brain development from the very start. [1]

Does delayed cord clamping increase vitamin K?

Vitamin K isn't transferred in large amounts through the cord blood itself, so delayed cord clamping isn't a direct route to increasing your baby's vitamin K levels. However, there is thinking that there are other useful nutrients in the cord blood that are beneficially transferred to the infant — including iron and hemoglobin — though some are harder to measure and prove. The additional blood volume from delayed cord clamping does support your baby's overall nutritional status in those early days. Vitamin K supplementation at birth (usually via injection) remains recommended regardless of cord clamping timing. [3]

For preterm babies

The benefits are even more pronounced for babies born before 37 weeks. In preterm babies, delayed umbilical cord clamping is associated with significant neonatal benefits, including improved transitional circulation, better establishment of red blood cell volume, decreased need for blood transfusion, and lower incidence of necrotizing enterocolitis and intraventricular hemorrhage. [2]

That's a pretty powerful list for something that costs nothing and takes less than three minutes.

What are the benefits for mom with delayed cord clamping?

Here's some reassuring news for anyone worried about their own health during this time: delayed umbilical cord clamping does not increase the risk of postpartum hemorrhage. So the wait doesn't put you at any greater risk of heavy bleeding — one of the most common concerns moms have about this practice. [2]

Additionally, during the waiting time, your baby can be placed skin-to-skin on your chest or abdomen. For term births, while the cord is intact the baby can be placed on the mother's abdomen or chest following a vaginal birth without influencing the volume of placental transfusion. Those first precious moments of skin-to-skin contact — with the cord still intact — can support bonding, help regulate your baby's temperature, and encourage breastfeeding initiation. Win-win-win. 🥹

How long should you delay cord clamping for?

This is one of the most common questions — and the answer varies a little depending on who you ask and your individual situation.

The World Health Organization (WHO) recommends waiting 1 to 3 minutes. The WHO states: "Late cord clamping (performed after 1 to 3 minutes after birth) is recommended for all births while initiating simultaneous essential newborn care. Early cord clamping (less than 1 minute after birth) is not recommended unless the neonate is asphyxiated and needs to be moved immediately for resuscitation." [4]

ACOG recommends at least 30–60 seconds delay in vigorous term and preterm infants. [2]

About 80% of the blood in the placenta at birth is believed to flow to the infant in the first minute, so waiting 30–60 seconds captures the majority of that benefit. Waiting longer — up to two or three minutes — may offer additional advantages, particularly around cardiovascular stability. [5]

Some parents choose to wait until the cord stops pulsing on its own, which typically happens around 3–5 minutes. This is sometimes called delayed cord clamping until pulsing stops, or "physiological cord clamping."

How long will hospitals let you delay cord clamping?

This depends on your hospital and care team, so it's worth discussing in advance. NICE recommends that the cord is not clamped in the first 60 seconds, and that women should be supported if they wish this to be delayed further, though it recommends the cord should be clamped before 5 minutes. [6]

Many hospitals are now supportive of waiting up to 3–5 minutes, especially for uncomplicated vaginal births. If you want delayed cord clamping for 30 minutes or beyond (sometimes requested as part of a lotus birth), most hospitals won't accommodate this and there's no clinical evidence to support benefits beyond a few minutes. The significant gains happen in those first few minutes — the cord naturally stops its active transfer of blood well before the 30-minute mark.

What happens if you wait too long to cut the cord?

Delaying beyond 3–5 minutes offers diminishing returns in terms of blood transfer, as the flow naturally slows and stops. There's no clinical evidence that extending past this point delivers additional benefit. The cord will naturally stop pulsating when the transfer is complete, which is why some providers use this as their guide. Any concerns about waiting longer should be discussed with your care team based on your specific situation.

What happens to the placenta after delayed clamping?

While delayed cord clamping is happening, your placenta is still doing its thing — contracting and pushing remaining blood toward the baby. After the cord is clamped and cut, the third stage of labor begins (if it hasn't already), during which your body delivers the placenta. This typically happens within 30 minutes of birth.

Good news: there were no statistically significant differences between immediate and deferred cord clamping groups in terms of postpartum hemorrhage, severe postpartum hemorrhage, or manual removal of placenta. So delayed clamping doesn't appear to complicate placental delivery. [1]

Do most doctors delay cord clamping?

Delayed cord clamping is increasingly becoming standard practice — though uptake has been variable globally. The International Federation of Gynecology and Obstetrics and the World Health Organization no longer recommend immediate cord clamping as a component of active management. Major bodies including ACOG, WHO, NICE, and RCOG all now support it.

Most obstetricians understand the benefits of waiting to clamp and cut the umbilical cord. It is within your right to request delayed cord clamping for your baby. That said, policies can still vary between hospitals and providers, so putting it in your birth plan and having the conversation with your midwife or OB in advance is always a smart move. ✅

Can you do delayed cord clamping with a c-section?

Yes! Delayed cord clamping during a c-section is possible, though it does come with some logistical differences. Placental transfusion at caesarean section appears to be less than for vaginal birth, which may be due to gravity if the baby is lifted up before clamping the cord, and lower uterine tone. [1]

That said, research supports its use. In cesarean section, delayed cord clamping for 30–60 seconds improved the early hematological status of term neonates without an enhanced requirement of phototherapy for neonatal jaundice. [7]

If a c-section is part of your birth plan (scheduled or not), it's absolutely worth discussing delayed cord clamping with your surgical team in advance so they can plan accordingly. More hospitals are now incorporating it into their c-section protocols, and it doesn't have to be an either/or situation.

Delayed cord clamping and cord blood banking

Here's one thing worth knowing if you're considering banking your baby's cord blood: delayed cord clamping and cord blood banking can sometimes work against each other. Since the volume of collected cord blood is reduced if clamping is delayed beyond 60–90 seconds, families choosing private banking should be counseled that DCC may reduce sample yield or cell count.

ACOG advises that the practice of umbilical cord clamping should not be altered solely for the purpose of collecting cord blood. Your baby's immediate health benefits come first. [8]

Some cord blood banks now have technology designed to work with shorter delayed clamping windows, allowing you to get some benefit of both. It's worth researching your options and talking to your provider about what's realistic for your specific situation.

Are there any dangers to delayed cord clamping?

No medical decision is completely risk-free, so let's talk honestly about the potential downsides.

Jaundice: This is the most commonly cited concern. The extra red blood cells from delayed clamping mean more bilirubin — a byproduct of red blood cell breakdown — which can lead to jaundice. There is a small increase in the incidence of jaundice that requires phototherapy in term infants undergoing delayed umbilical cord clamping. Obstetrician-gynecologists and other obstetric care providers adopting delayed umbilical cord clamping in term infants should ensure that mechanisms are in place to monitor and treat neonatal jaundice. [2]

Importantly though, jaundice is very common in newborn babies and it may happen no matter how soon the cord is clamped after birth. Your baby will be examined for signs of jaundice within 72 hours of being born as part of their newborn physical examination. [9]

Polycythemia: This is when a baby has too many red blood cells, which can thicken the blood. It has long been theorized that delayed cord clamping puts full-term babies at increased risk of polycythemia, but the evidence in support of this is mixed at best. It's monitored as a precaution, and treatment when needed is manageable. [10]

When DCC isn't recommended: There are situations where your care team may advise against delaying clamping — for example, if there are concerns about placental abruption, cord integrity, or if your baby needs immediate resuscitation. Your team will always make the call based on what's safest in the moment.

The overall consensus? Experts conclude that as long as infants are checked for jaundice, the benefits of delayed cord clamping outweigh this small risk.

Is delayed cord clamping painful for baby?

Not at all. The cord itself contains no nerve endings, so cutting it is painless for your baby regardless of when it happens. The clamping and cutting process feels nothing — your baby won't experience any discomfort from DCC itself.

How to add delayed cord clamping to your birth plan

It's simple: write it in your birth plan, and talk to your care team at one of your prenatal appointments before your due date. Be specific — state how long you'd like to wait (e.g., "please wait at least 60 seconds" or "please wait until the cord stops pulsating"). If you're having a c-section, flag it with your surgical team so they can prepare.

If you're also considering cord blood banking, now's the time to bring that into the conversation too, so everyone is on the same page.

So, is delayed cord clamping worth the wait?

For most births — vaginal or c-section, term or preterm — the evidence strongly suggests yes. In healthy term babies, the evidence supports deferring clamping of the umbilical cord, as this appears to improve iron stores in infancy.

Delayed cord clamping in term and preterm infants is a simple, safe, and effective delivery procedure which should be recommended. The benefits — more iron, better hemoglobin levels, improved cardiovascular transition, and potential long-term developmental advantages — are well-supported, and the risks are manageable and monitored.

Delayed cord clamping is one of those birth plan choices that's backed by solid science and championed by virtually every major medical body worldwide. Those extra minutes — or even seconds — give your baby more blood, more iron, and a gentler start to life outside the womb. The risks are real but small and closely monitored, and for most families, the benefits speak for themselves.

Whether you're planning a home birth, a hospital delivery, or a scheduled c-section, it's worth asking about. You've done the research — now just add it to the list. 🫶