If your child has cystic fibrosis would it definitely show up on the heel prick test?

CF screening. The test performed at birth is a screening test and may miss some cases of cf. If your child develops symptoms of the disease or if there is a family history of cf, a follow up test may be ordered by your physician.
No. Most mutations that cause CF are known and are tested for at birth. However, rare subtypes (that are generally not as severe) are not all typed yet and therefor aren't tested for.

Related Questions

If you were a carrier of cystic fibrosis, how do you test to see if your unborn child has inherited it?

CF. First you need to determine if the father of the baby is also a carrier of the disease as CF is a recessive disease. Therefore both parents need to be carriers and even then there is only a 25% chance the baby is affected. Doing either cvs or amnio can determine if the fetus is affected by cf. If only one parent is a carrier. Screening post natal is recommended. Read more...

What is the name of the child's test for cystic fibrosis?

Sweat Test. There is genetic testing testing analyzing dna, but you are probably thinking of a "sweat chloride test". In kids with cf, this chemical test of stimulated sweat is elevated. Read more...
Sweat Chloride Test. There are several tests including newborn screening. The sweat test is considered the most common screening test for children. It is highly accurate if performed correctly and if there is adequate sweat collected. Read more...

If you're expecting a baby, how can you test for cystic fibrosis?

See below. Fetal blood obtained through chorionic villi sampling or fetal cells acquired through amniocentesis can be utilized to test for cystic fibrosis. If both parent is carrier of the gene, their offspring has a 25% chance of having cf. Consult your obstetrician for further details. Read more...
Screening. The easiest step is to see whether both parents are carriers of the CF gene; in order for a child to acquire cf, both parents must be carriers. Otherwise, screening newborn babies for CF is now a standard procedure in all fifty states. Read more...
Blood test. It is a simple blood test that can be done at any gestational age.Family history of cystic fibrosis should prompt u get the test asap. Read more...

Can you tell me if a baby has a good chance of getting cystic fibrosis will the baby show symptoms right away?

Not necessarily. Depending on the expression of any CF genes it may present at birth with sticky poo & bowel obstruction or not be detected for months. Many states now include CF as part of their newborn screening programs to facilitate early recognition and treatment. Read more...
Variable. CF newborn screening programs can detect CF early on, so that treatment can be initiated earlier. If an infant begins to have symptoms consistent with cf, the test should be repeated even if the screening was negative at birth. Symptoms can begin at any time and this depends on a number of factors, including the specific genetic mutation of the CF gene. I hope this helps. Read more...