Observational StudyAnti-mullerian Hormone Levels in Healthy Females

Inclusion Criteria:

1. Pre- and post-pubertal females
2. Ages 0-18 years old
3. Tanner Stage I- V
4. Undergoing routine outpatient surgical procedure

1. Hernia repair (inguinal, umbilical, epigastric)
2. Excision of benign mass
3. laparoscopic cholecystectomy

Exclusion Criteria:

1. Previous diagnosis of an illness associated with premature ovarian failure (Turner's syndrome, Fragile X permutation carrier) or endocrine disorder associated with irregular menstrual cycles (Cushing's disease, poorly-controlled Thyroid disease, hyperprolactinemia, polycystic ovary syndrome, and congenital adrenal hyperplasia) or insulin-dependent diabetes mellitus or autoimmune disorders
2. Previous diagnosis of any malignancy or any history of systemic/local chemotherapy, radiation therapy, or stem-cell transplant.
3. Previous surgical excision of one ovary or both ovaries
4. Pregnant females
5. All inpatient surgical patients
6. Undergoing non-routine outpatient surgical procedures

1. Central venous catheter placement
2. Supprelin insertion/removal
3. Breast mass excision
4. Gastrostomy tube insertion