Navigation Links
Androstenedione RIA Test

ProductsAndrostenedione RIA Test
Company Diagnostic Systems Laboratories, Inc.
Item Androstenedione RIA Test
Features Inquire
Description Androstenedione, produced in the adrenal gland and gonads, is the immediate precursor to both testosterone and estrone, both of which may be subsequently converted to estradiol. Androstenedione has relatively weak androgenic activity, estimated at ~(less than or equal to) 20% of testosterone [1]. However, serum androstenedione levels often exceed testosterone in both normal and disease states. Secretion and production rates also exceed those of testosterone in women in whom significant extra-adrenal conversion of androstenedione to testosterone occurs [1,2,3].

Measurement of serum androstenedione provides a useful marker of androgen biosynthesis. Elevated androstenedione levels have been demonstrated in virilizing congenital adrenal hyperplasia [4]. Serum androstenedione levels are also increased in polycystic ovary syndrome, ovarian stromal hyperthecosis, 3b-hydroxysteroid dehydrogenase deficiency, and other causes of hirsutism in women [3,5]. Elevated serum androstenedione levels may also occur in adrenal and ovarian virilizing tumors [3].

  1. 1. Dorfman RI, Shipley RA: Androgens. John Wiley and Sons, New York, 1956, pp.116-128.
  2. Horton R, Tait J: Androstenedione production and interconversion rates measured in peripheral blood and studies on the possible site of its conversion to testosterone. J Clin Invest 45:301-313, 1966.
  3. Pang S, Riddick L: Hirsutism. IN Lifshitz F (ed): Pediatric Endocrinology, A Clinical Guide, second edition. Marcel Dekker, Inc., New York, 1990, pp. 259-291.
  4. Cavallo A, Corn C, Bryan GT, Meyer WJ III: The use of plasma androstenedione in monitoring therapy of patients with congenital adrenal hyperplasia. J Pediatr 95: 33-37, 1979.
  5. Rittmaster RS, Thompson DL: Effects of leuprolide and dexamethasone on hair growth and hormone levels in hirsute women: the relative importance of the ovary and adrenal in the pathogenesis of hirsutism. J Clin Endocrinol Metab 70:1096-1102, 1990.
  6. Zwicker H, Rittmaster RS: Androsterone sulfate: physiology and significance in hirsute women. J Clin Endocrinol Metab 76:112-116, 1993.
  7. Barrett-Connor E, Garland C, McPhillips JB, Khaw K-T, Wingard DL: A prospective, population-based study of androstenedione, estrogens, and prostate cancer. Canc Res 50:169-173, 1990.
Info Diagnostic Systems Laboratories, Inc.
Customer Service: (800) 231-7970
Web site: http://www.dslabs.com

Related medicine products :

1. Androstenedione EIA Test
2. Androstenedione
Williger periosteal elevator, 6 1/4", sharp, 5 mm wide....
Alley periosteal elevator, extra long, 21 cm, 8-1/4"....
Periosteal elevator #9H, 17.5 cm, 7"....
Periosteal elevator #9, 18 cm, 7"....
Medicine Products:
(Date:12/6/2016)... Maryland (PRWEB) , ... December 06, 2016 , ... ... announced the launch of a Kickstarter crowd funding campaign ( http://kck.st/2g3a1so ) for ... health active alerts and even taking an EKG from the watch while sharing ...
(Date:12/6/2016)... ... December 06, 2016 , ... Specialty ... newly updated International Audit Protocol Consortium (IAPC) EHS audit protocol for Great ... understand the scope of their EHS regulatory obligations and rapidly collect, share, archive, ...
(Date:12/5/2016)... ... ... What: Shriners Hospitals for Children, with the help of Dimension Data, will bring ... monitor and web-enabled camera. Santa visits with children through Dimension Data’s program to connect ... is where the video connection to the North Pole will stream. Much like children ...
(Date:12/5/2016)... ... December 05, 2016 , ... SyncDog, Inc., the leading ... magazine, a leading online tech news platform connecting technology innovators with news, experience, ... explores the state of enterprise mobility security today, and how the SyncDog SentinelSecure™ ...
(Date:12/5/2016)... ... December 05, 2016 , ... Progressive Laboratories™ is ... and glutathione to enhance production of nitric oxide (NO). , NitroGenesis Pro™ is ... produce NO twice as effectively and sustains NO blood levels twice as long ...
Breaking Medicine News(10 mins):
(Date:12/5/2016)... GAINESVILLE and BOCA RATON, ... The Florida Institute for the Commercialization of Public ... it has finalized a funding agreement SegAna, LLC, ... technology developed at University of Central Florida. The ... publicly-funded research, and bridges early funding gaps for ...
(Date:12/5/2016)... PUNE, India , December 5, 2016 ... Market by Treatment modalities (Chondrocyte Transplantation, Growth Factor Technology, Tissue Scaffolds, ... 2021" published by MarketsandMarkets, the market is projected to reach USD ... at a CAGR of 13.5% during the forecast period of 2016 ... ...
(Date:12/5/2016)... , Dec. 5, 2016   BIOTRONIK today ... study. The study evaluates the safety and feasibility of ... an office setting. BioMonitor 2 is an ... that is placed underneath a patient,s skin to help ... (fainting). Atrial fibrillation is a leading cause of stroke ...
Breaking Medicine Technology: