Type
Competitive ELISA, Immobilized antigen
Description
For the direct quantitative determination of Pregnenolone by enzyme immunoassay in human serum.
For research use only.
Applications
Serum
Sample Requirements
50 μl/well
Shipping
On blue ice packs. Upon receipt, store the product at the temperature recommended below.
Storage/Expiration
Store the complete kit at 2–8°C. Under these conditions, the kit is stable until the expiration date (see label on the box).
Calibration Curve
Calibration Range
0.1–25.6 ng/ml
Limit of Detection
0.054 ng/ml
Intra-assay (Within-Run)
CV = 9.2%
Inter-assay (Run-to-Run)
CV = 10%
Features
- RUO
- calibration range 0.1-25.6 ng/ml
- limit of detection 0.054 ngml
- controls
- intra-assay CV = 9.2%
- inter-assay CV = 10%
Research topic
Steroid hormones
Summary
Pregnenolone (3β-hydroxypregn-5-en-20-one) is the first steroid to be derived from cholesterol in the pathway of steroidogenesis, and it is the common precursor for all of the adrenal and gonadal steroids. Its production occurs in the mitochondrion by cleavage of the C-20 side chain of cholesterol by the P-450SCC enzyme. Once produced, Pregnenolone may be utilized by two pathways of steroidogenesis. Pregnenolone may either be converted to 17-OH Pregnenolone via the enzymatic action of 17α-hydroxylase or to progesterone via the enzymatic action of 3β-hydroxysteroid dehydrogenase.
Elevated Pregnenolone levels occur in forms of congenital adrenal hyperplasia (CAH), due to 3β-hydroxysteroid dehydrogenase deficiency or 17α-hydroxylase deficiencies. Higher levels have also been reported in women with idiopathic hirsutism. Studies on Pregnenolone levels in regard to sex and age differences indicate that maximum levels occur at approximately 17 and 16 years of age for women and men, while minimum levels occur at approximately 37 and 38 years of age for women and men, respectively. In general, women were found to have slightly higher values when compared to men.
Many areas of Pregnenolone physiology remain to be investigated. Current research indicates that the determination of Pregnenolone in serum may be useful for studying its metabolite, Pregnenolone sulfate, which has been reported to have various effects in the mammalian brain and central nervous system.
Example
Instructions for Use (RUO)
Instructions for Use (RUO)
Safety Information (RUO)
MSDS (RUO)
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