How Long Does THC Stay in Unborn Baby’s System?

THC may stay in unborn baby’s system for day 1 or 2 for moderate users who quit smoking weed at first trimester.

The reputed and standard drug test is urine test as it detects so fast!

Urine tests detect substances from 5 to 10 days.

For heavy users it may stay up to several weeks after baby mother giving up smoking weed.

While pregnancy you may go under the following threats unless you won’t stop quitting weed to take:

  • low birth weight
  • preterm birth
  • Developmental and behavioral problems in children

Therefore, it is generally recommended that pregnant women quit smoking weeds before 30 weeks.

How long does it take for weed to get out of a unborn baby’s system for drug test

According to Pubmed:

It is important to note that maternal marijuana use during pregnancy has been associated with several adverse outcomes, including

THC can be detected in fetal meconium for up to 28 days after maternal marijuana use, with a median detection time of 12 days.

Gray TR, Eiden RD, Leonard KE, Connors GJ, Shisler S, Huestis MA. Identifying prenatal cannabis exposure and effects of concurrent tobacco exposure on neonatal growth. Clin Chem. 2010;56(9):1442-1450. doi:10.1373/clinchem.2010.145880

The more THC you will consume during pregnancy the more time it will take to clean out of your unborn baby’s system while drug test.

The SAMHSA 5 drug test is a standard test which detects THC. However, the minimum amount would be: Marijuana metabolites 50 ng/mL depends on the amount of THC you

If you think smoking weed or mariijuana has benefits then you are wrong as no scientific evidence has still revealed to support that.

Whether smoking or otherwise consuming marijuana has therapeutic benefits that outweigh its health risks is still an open question that science has not resolved

NIDA. “Can marijuana use during and after pregnancy harm the baby?.” National Institute on Drug Abuse, 13 Apr. 2021, Accessed 27 Feb. 2023.

How Might Thc Exposure Affect an Unborn Baby

When it comes to THC and pregnancy, there is unfortunately not a lot of reliable information out there.

This is largely due to the fact that THC is still illegal in many parts of the world, which makes conducting research on the effects of THC on pregnant women very difficult.

However, what we do know is that THC can cross the placenta and enter the fetal bloodstream.

Additionally, studies on animals have shown that THC exposure can interfere with normal brain development.

So what does this mean for human babies exposed to THC in utero? Unfortunately, we don’t really know for sure.

Some studies have suggested that babies exposed to THC in utero are more likely to experience problems with attention, memory, and impulsivity later on in life.

However, it’s important to keep in mind that these studies are far from conclusive, and much more research is needed before we can say for sure what the long-term effects of prenatal THC exposure might be.

If you’re pregnant and using marijuana, it’s important to talk to your doctor about the potential risks involved.

Until we know more about how prenatal exposure to marijuana affects human babies, it’s best err on the side of caution and avoid using marijuana during pregnancy altogether.

What are the Risks of Exposing an Unborn Baby to Thc

Exposing an unborn baby to THC can have a number of risks. These risks include:

1. Impaired brain development:

Studies show that exposing an unborn baby to THC can lead to impaired brain development.

This can result in problems with learning, memory and attention span later in life.

2. Increased risk of birth defects:

Exposure to THC during pregnancy has been linked to an increased risk of certain birth defects, such as cleft palate and heart defects.

3. Premature birth:

Some studies have found that exposure to THC during pregnancy may increase the risk of premature birth.

4. Reduced IQ:

One study found that children exposed to THC in utero had lower IQ scores than those who were not exposed. This impact was most pronounced in children who were exposed to high levels of THC.


It is not clear how long THC stays in an unborn baby’s system. However, it is possible that it could stay there for some time after birth. This could have implications for the development and behavior of the child.

Sarah, a health writer and editor since 2014, is an adoring wife and dedicated mother to 2 daughters and 1 son. As the creator of Babies Plannet, she combines her extensive expertise with her maternal dedication to provide essential care and safety advice for infants, nurturing their well-being and happiness. Her writing explores topics like fitness, pregnancy, and women's healthy lifestyles.

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