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Spuriously high androstendione concentrations due to assay interference as a cause of diagnostic conundrum in women with oligomenorrhoea.

Lewandowski KC, Grotowski W, Dabrowska K, Głowacka E, Lewiński A.
Ginekologia polska.Ginekol Pol.2015 Mar;86(3):229-33.
Polycystic ovary syndrome (PCOS) is a diagnosis of exclusion. We present two cases of women with oligomenorrhoea and high concentration of androstendione, suggestive of possible androgen-secreting tumour; caused by assay interference. The first patient, investigated for oligomenorrhoea, had no signi
PMID 25920315
PMID 25759197

Adrenocortical adenomas with regression and myelolipomatous changes: urinary steroid profiling supports a distinctive benign neoplasm.

Perna V1, Taylor NF, Dworakowska D, Schulte KM, Aylwin S, Al-Hashimi F, Diaz-Cano SJ.
Clinical endocrinology.Clin Endocrinol (Oxf).2014 Sep;81(3):343-9. doi: 10.1111/cen.12458. Epub 2014 May 6.
BACKGROUND: Adrenocortical neoplasms are classically divided into adenomas (ACA) and carcinomas (ACC). Heterogeneous appearance and greater size are criteria to suggest malignancy, along with the urinary steroid profile (USP). The presence of regression and myelolipomatous changes in adenomas (ACA-R
PMID 24712713

A Direct Determination of Sulfate Conjugates of 17-Oxosteroids in Urine by Use of Benzyltributylammonium Chloride:Without Solvolysis and Enzymatic Hydrolysis