urine sampling Articles
-
210Po concentration in urine of residents in a high level background radiation area in Iran
As part of an epidemiological survey to determine public exposure to natural radiation and to estimate radionuclide levels in the diet of residents in a high level background radiation area at Ramsar in Iran, 210Po concentrations were determined in 24-hour urine samples by means of a liquid scintillation counting technique. The maximum and minimum mean concentrations of 210Po in 100 ml of urine ...
-
Timing of urinary estrone-3-glucuronide tests
Background The onset of a woman's fertile phase can be identified by an increase in concentration of urinary metabolites of estradiol, including E1-3G (estrone-3-glucuronide). Home ovulation tests typically detect the lutenising hormone (LH) surge, which identifies the day before and day of ovulation. Some tests also measure E1-3G to identify the user's wider fertile phase. Such tests ...
By Clearblue
-
Investigation on microbial inactivation and urea decomposition in human urine during thermal storage
The World Health Organization suggests storing human urine for at least 6 months at 20 °C prior to application as fertilizer to reduce the potential health risks from pathogenic organisms. Such a storage condition for human urine, however, not only requires a long period of time and large space but also ignores the risk of nitrogen losses. In this study, human urine underwent thermal ...
-
hCG and FSH Levels During Early Pregnancy and Reproductive Aging
Low levels of hCG are known to be co-produced with FSH during reproductive aging (during peri-menopause and menopause). A missed period could be indicative of pregnancy or peri-menopause for woman in later reproductive life, so understanding the reference ranges for hCG is important. Introduction hCG assays have high sensitivity and specificity for pregnancy1 Low levels of hCG are known to ...
By Clearblue
-
Analysis of Whole Blood for Trace Lead (Pb) by Graphite Furnace AAS
Toxic effects from heavy metals (Pb, As, Se, Cd, Bi, Sn, Tl, and Hg) have been characterized in medical literature for decades. Originally, complex extractions were performed to isolate the poisonous components from the complex biological matrices: blood, serum, urine and tissues. Recently, optical emission and atomic absorption spectroscopy techniques were developed to determine these ...
-
Dermal absorption of chlorpyrifos in human volunteers
Objective: The methods and results are described of a study on the dermal absorption of chlorpyrifos (CPF) in humans established via urinary excretion of the metabolite 3,5,6-trichloro-2-pyridinol (TCP). Methods: Two dermal, single, doses of CPF were applied in two study groups (A and B) each comprising three apparently healthy male volunteers who gave their written informed consent. The clinical ...
-
Impact of feeding flaxseed oil on delaying the development of osteoporosis in ovariectomised diabetic rats
This work is aimed to study the effect of diabetes on bone health and to evaluate the impact of feeding flaxseed oil on delaying osteoporosis. About 70 female albino rats were included; 30 were ovariectomised (ovx). Experimental diabetes was induced. Rats were classified in groups as control, sham, diabetic, diabetic received flaxseed oil in the diet, ovx, ovx-diabetic and ovx-diabetic received ...
-
Detailed Introduction to Steroids Analysis
Steroid hormone is a class of compounds that contain cyclopentane polyhydrophenanthrene structure formed by cholesterol and catalyzed by cytochrome P450 enzymes. Steroid hormones mainly include adrenocorticotropic hormones secreted by the adrenal cortex and sex hormones secreted by the gonads, which are mainly divided into four categories: progesterone, corticosteroid, estrogen and androgen. ...
-
LC/MS/MS analysis of metabolites of synthetic Cannabinoids JWH-018 and JWH-073 in Urine
Abstract A liquid chromatographic method was developed to resolve a comprehensive set of metabolites of JWH-018 and JWH-073. In addition to the chromatographic analysis method, an extraction method was developed to recover a broad range of synthetic cannabinoid metabolites, including carboxylic acid metabolites that are not traditionally recovered using a high pH liquid/liquid extraction. The ...
-
Characterization of trenbolone acetate and estradiol metabolite excretion profiles in implanted steers
Exogenous growth promoters have been used in United States beef cattle production for over 50 years. The environmental fate and transport of steroid growth promoters suggest potential for endocrine disrupting effects among ecological receptors; however, the initial excretion of steroid metabolites from cattle administered growth promoters has not been well characterized. To better characterize ...
-
Utility of check dams in dilution of fluoride concentration in ground water and the resultant analysis of blood serum and urine of villagers, Anantapur District, Andhra Pradesh, India
High levels of fluoride (beyond 1.5 ppm) in ground water as source of drinking water are common in many parts of Andhra Pradesh, India, causing fluorosis. The study carried out in endemic Nalgonda District, Andhra Pradesh, has indicated that the fluoride-rich ground water present in the wells located down stream and close to the surface water bodies is getting diluted by the low-fluoride surface ...
-
Technical Hints and Tips for Optimal Performance of your Loeser Osmometer
General function and description: The sample (serum, blood, urine or any other aqueous solution) is filled in a plastic sample tube and cooled via a Peltier element. These are semiconductor devices, which become cold on one side and warm on the other when electrical current flows through. The cold side cools the sample whilst the heat from the warm side dissipates into the air by convection. ...
-
Biorepository Safety
What is a Biorepository? A biorepository, or "biobank", is a specialized facility designed to store, archive, and distribute biological samples for research or clinical purposes. Biorepositories house biological samples, such as blood, plasma, urine, saliva, tissues, DNA, and organs, among other specimen types, collected from consenting individuals. Critical associated information, including ...
-
The Role of Lactate in Sepsis Research
Sepsis reportedly affects up to 30 million people each year. Lactate levels play a key role in diagnosing the condition and limiting its impact, as well as researching it's progression and developing possible treatments. Here's how. Sepsis is a medical condition and emergency, the definition of which has proven difficult and is based on fairly recent developments and research. It is the result ...
-
Exploring the Intricate Link Between Bile Acids and Disease
Bile acids are synthesized in the liver from cholesterol as a raw material. As a natural "emulsifier", they can promote the dissolution, digestion and absorption of fats, fat-soluble vitamins, etc. Meanwhile, as an important signaling molecule, bile acids can activate the relevant receptors to maintain the homeostasis of hepatic glucose and lipid metabolism, and interact with gut bacteria to ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you