Glossary
Bone age:
A way to measure how old a bone is. It helps doctors tell more about a person's growth potential.
Catch-up growth:
Faster-than-average growth rate in a small child.
Chromosome:
A structure in the cell nucleus that carries hereditary characteristics. There are 23 pairs of chromosomes in humans.
cm:
Stands for centimeter in the metric system. One centimeter is almost half an inch. It is used to measure growth.
Diluent:
A liquid used to dissolve a drug to be injected.
DNA (deoxyribonucleic acid):
DNA is found in the chromosomes of animal and vegetable cells. It is responsible for what a person inherits.
Endocrine:
Having to do with hormones.
Endocrinology:
The study of the endocrine system.
Epiphysis (plural: epiphyses):
The part of a long bone that grows.
Familial short stature:
Short children of short parents.
FDA (Food and Drug Administration):
The FDA is part of the United States Department of Health and Human Services with responsibility to regulate the safety of medicines.
Genes:
The basic biological units that are passed on from one generation to the next. Genes control what a person inherits, such as height and hair color.
Growth chart:
A record of the height and weight of a person.
Hypopituitarism:
A deficiency of one or more hormones made in the pituitary gland.
Injection site:
A place on the body where a medicine is injected under the skin or into muscle with a needle. Growth hormone therapy is injected under the skin of the thigh, buttock, or abdomen. A different injection site should be used each day.
kg:
Stands for kilogram in the metric system. One kilogram is equal to 2.2 pounds.
Lyophilized powder:
Freeze-dried powder.
mL:
Stands for milliliter in the metric system. Five (5) mL is about 1 teaspoon.
Patient Care Consultant (PCC):
A specialist at the Pfizer Bridge Program. The PCC provides reimbursement support and can help access device support for patients on GENOTROPIN (somatropin [rDNA origin] for injection) and their families throughout treatment. Your PCC works with you, your doctor's office, your health insurance company, and your pharmacy while you or your child are being treated.
Percentile:
A term doctors use to compare a child's height and weight with those of other children.
Pfizer Bridge Program:

The Pfizer Bridge Program offers insurance coverage and device support for you and your child throughout treatment. With the Pfizer Bridge Program, you will be assigned a Patient Care Consultant (PCC). This means you will have access to the same person who knows you or your child's treatment history.
Pituitary gland:
A small gland in the brain that secretes growth hormone. It secretes other hormones as well.
Pre certification:
A process used by your health insurance providers to decide whether or not they will cover the cost of the procedure or drug prescribed by a physician.
Puberty:
Changes that happen to children as they become adults. At this time there is a growth spurt that lasts about 2 years. It is marked by sexual development—growth of pubic hair and development of sex organs. Females begin to menstruate during this time.
rDNA:
This stands for recombinant DNA. It is the result of combining genetic materials of different origins.
Reconstitution:
A return to the original state of a substance.
Replacement therapy:
A treatment program that will give a person what their bodies do not adequately produce. Growth hormone replacement therapy (for example, GENOTROPIN) is used because the body does not secrete enough of its own growth hormone.
Small for gestational age (SGA):
A birth weight, birth length, or both that is below the third percentile, after adjustment for gestational age and sex.
Somatropin:
Natural growth hormone. It is a protein that is secreted by the pituitary gland.
Stadiometer:
A device used to measure height.
Statement of Medical Necessity (SMN):
A form a doctor fills out that explains why a therapy has been recommended. This document acts as a prescription for growth hormone (GH) therapy.
"Stim" test (stimulation test):
This test will "stimulate" the production of growth hormone.
It will help your child's doctor decide if he or she is making enough growth hormone. During the test, one or more medicines may be given to your child. Some will be given by injection or IV needle. During the test, samples of blood will be taken so the doctor can measure how the growth hormone in your child's body is responding.
Systemic:
Affecting the whole body.
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