Evaluation of DiaSorin Liaison calprotectin fecal assay adapted for pleural effusion.

Objectives: Calprotectin (CP) is a calcium and zinc binding protein that is widely measured on faecal samples but its determination in other biological fluids might be of interest. The aim of this work was to validate the measurement of CP in pleural fluid by chemiluminescence.

Methods: LIAISONXL, a fully automated chemiluminescence analyzer, was used for CP quantification on pleural fluid.

Pharmacological hyperprolactinemia: a retrospective analysis of 501 hyperprolactinemia cases in primary care setting.

Purpose: To describe a series of cases with pharmacological hyperprolactinemia in primary care setting and the prolactin levels, clinical implications of different causes of pharmacological hyperprolactinemia.

Methods: A retrospective study of all patients with detected hyperprolactinemia in hormonal studies was performed between 2019 and 2020 in 20 Spanish primary care centers. Hyperprolactinemia is defined as a serum prolactin >19.

The prevalence of primary and secondary hyperparathyroidism and its cardiometabolic implications in primary aldosteronism.

Background: The aim of this study was to analyze the prevalence of primary and secondary hyperparathyroidism in patients with primary aldosteronism (PA), and its implication on cardiovascular and metabolic outcomes.

Methods: A retrospective study of patients with PA (exposed cohort, N.=44) and all hypertensive (EH) patients with adrenal lesions without PA nor other adrenal hypersecretion (non-exposed cohort, N.

Causes of hyperprolactinaemia in the primary care setting: How to optimise hyperprolactinaemia management.

Background And Purpose: To analyse the causes of hyperprolactinaemia in patients with symptoms compatible with hyperprolactinaemia evaluated in a primary care setting.

Patients And Methods: A retrospective study of all patients tested for serum prolactin levels between 2019 and 2020 in 20 primary care centres at the Hospital Ramón y Cajal in Madrid. Hyperprolactinaemia is defined as a serum prolactin>19.

Diagnostic accuracy of the different hormonal tests used for the diagnosis of autonomous cortisol secretion.

To evaluate the diagnostic accuracy of the different tests commonly used in the evaluation of adrenal incidentalomas (AIs) for the identification of autonomous cortisol secretion (ACS) and comorbidities potentially related to ACS. In a retrospective study of patients with AIs ≥ 1 cm, we evaluated the diagnostic reliability and validity of the dexamethasone suppression test (DST), urinary free cortisol (UFC), ACTH, late-night salivary cortisol (LNSC), and dehydroepiandrosterone-sulphate (DHEAS) for the diagnosis of comorbidities potentially related to ACS. Diagnostic indexes were also calculated for UFC, ACTH, LNSC, and DHEAS considering DST as the gold standard test for the diagnosis of ACS, using three different post-DST cortisol thresholds (138 nmol/L, 50 nmol/L and 83 nmol/L).

Serum zinc and copper in people with COVID-19 and zinc supplementation in parenteral nutrition.

Objectives: Zinc and copper are important to protect cells from oxidative stress and to enhance immunity. An association between low zinc levels and the severity of acute respiratory distress syndrome has been shown for people with COVID-19. We aimed to study serum zinc and copper concentrations in people with severe COVID-19 and zinc supplementation in parenteral nutrition (PN).

Higher risk of chronic kidney disease and progressive kidney function impairment in primary aldosteronism than in essential hypertension. Case-control study.

Purpose: To study the differences in the prevalence, risk, and grade of control of different cardiometabolic comorbidities in patients with primary aldosteronism (PA) and essential hypertension (EH) matched by age, sex, and blood pressure levels at diagnosis.

Methods: Case-control study of a secondary base (PA patients in follow-up in a tertiary hospital between 2018 and 2020). Controls were patients with non-functioning adrenal incidentalomas and EH, matched by age, sex, and baseline diastolic blood pressure (DBP) and systolic blood pressure (SBP).

Comparison of three methods for determining anti-thyrotropin receptor antibodies (TRAb) for diagnosis of Graves' disease: a clinical validation.

Objectives: Graves' disease is secondary to the presence of anti-thyrotropin receptor antibodies (TRAb), which stimulate thyroid hormones. TRab determination is crucial for etiological diagnosis. The objectives of this study were (i) to compare two methods for determining TRab by chemoluminiscence vs.

Cardiometabolic risk in patients with primary aldosteronism and autonomous cortisol secretion. Case-control study.

Objective: To analyse the differences in the cardio-metabolic profile of patients with primary aldosteronism (PA) and autonomous cortisol secretion (ACS) matched by age and sex.

Methods: Case-control study; cases of PA without associated ACS and as controls patients with ACS (dexamethasone suppression test ≥ 1.8 μg/dL in the absence of specific hypercortisolism clinical data), matched by age and sex.

Certified testosterone immunoassays for hyperandrogenaemia.

Background: Testosterone (T) measurement in women is problematic leading to initiatives aiming to improve laboratory standardization of commercial assays. We assessed the impact on the clinical diagnosis of functional hyperandrogenic disorders of a total T immunoassay recently certified by the Centers for Diseases Control and Prevention (CDC).

Methods: We conducted a cross-sectional study including 263 consecutive adult premenopausal women presenting with functional ovarian hyperandrogenism-including polycystic ovary syndrome (PCOS)-and 73 nonhyperandrogenic female volunteers who served to define reference ranges.

An unusual circulating steroid profile in a virilized postmenopausal woman.

Background: Virilism is a female disorder in which secondary male sexual characteristics develop, caused by an excessive adrenal or ovarian androgen secretion.

Case Presentation: Here, we report an unusual case of an ovarian steroid cell tumor, not otherwise specified (NOS), in a 68-year-old female who presented with androgenic alopecia, clitoromegaly and an increased muscle mass. Laboratory investigations revealed both ovarian and adrenal hyperandrogenism with an elevation of androgen precursors mimicking congenital adrenal hyperplasia.

Role of sampling times and serum cortisol cut-off concentrations on the routine assessment of adrenal function using the standard cosyntropin test in an academic hospital from Spain: a retrospective chart review.

Objectives: Aiming to validate the use of a single poststimulus sampling protocol for cosyntropin test short standard high-dose test (SST) in our institution, our primary objectives were (1) to determine the concordance between 30 and 60 min serum cortisol (SC) measurements during SST; and (2) to evaluate the diagnostic agreement between both sampling times when using classic or assay-specific and sex-specific SC cut-off values. The secondary objectives included (1) estimating the specificity and positive predictive value of 30 and 60 min sampling times while considering the suspected origin of adrenal insufficiency (AI); and (2) obtaining assay-specific cut-off values for SC after SST in a group of subjects with normal hypothalamic-pituitary-adrenal (HPA) axis.

Design And Setting: This is a retrospective chart review study conducted at a Spanish academic hospital from 2011 to 2015.