Test ID: CAH21
Congenital Adrenal Hyperplasia (CAH) Profile for 21-Hydroxylase Deficiency
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Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
CORTISOL
5-25 mcg/dL (a.m.)
2-14 mcg/dL (p.m.)
Pediatric reference ranges are the same as adults, as confirmed by peer-reviewed literature.
Petersen KE: ACTH in normal children and children with pituitary and adrenal diseases. I. Measurement in plasma by radioimmunoassay-basal values. Acta Paediatr Scand 1981;70:341-345
ANDROSTENEDIONE
PEDIATRICS*
Premature infants
26-28 weeks, day 4: 92-282 ng/dL
31-35 weeks, day 4: 80-446 ng/dL
Full-term infants
1-7 days: 20-290 ng/dL
1 month-1 year: <69 ng/dL
Males*
| Tanner Stages | Age (Years) | Reference Range (ng/dL) |
| Stage I (prepubertal) | <9.8 | <51 |
| Stage II | 9.8-14.5 | 31-65 |
| Stage III | 10.7-15.4 | 50-100 |
| Stage IV | 11.8-16.2 | 48-140 |
| Stage V | 12.8-17.3 | 65-210 |
Females*
| Tanner Stages | Age (Years) | Reference Range (ng/dL) |
| Stage I (prepubertal) | <9.2 | <51 |
| Stage II | 9.2-13.7 | 42-100 |
| Stage III | 10.0-14.4 | 80-190 |
| Stage IV | 10.7-15.6 | 77-225 |
| Stage V | 11.8-18.6 | 80-240 |
*Source: Androstenedione. In Pediatric Reference Ranges. Fourth Edition. Edited by SJ Soldin, C Brugnara, EC Wong. Washington, DC, AACC Press, 2003, pp 32-34
ADULTS
Males: 40-150 ng/dL
Females: 30-200 ng/dL
17-HYDROXYPROGESTERONE
Children
Preterm infants: Preterm infants may exceed 630 ng/dL, however, it is uncommon to see levels reach 1,000 ng/dL.
Term infants
0-28 days: <630 ng/dL
Levels fall from newborn (<630 ng/dL) to prepubertal gradually within 6 months.
Prepubertal males: <110 ng/dL
Prepubertal females: <100 ng/dL
Adults
Males: <220 ng/dL
Females
Follicular: <80 ng/dL
Luteal: <285 ng/dL
Postmenopausal: <51 ng/dL
Note: For pregnancy reference ranges, see: Soldin OP, Guo T, Weiderpass E, et al: Steroid hormone levels in pregnancy and 1 year postpartum using isotope dilution tandem mass spectrometry. Fertil Steril 2005 Sept;84(3):701-710
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