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Assessment of exposure to pesticides: residues in 24 h duplicate diets versus their metabolites in 24 h urine using suspect screening and target analysis
Human biomonitoring can add value to chemical risk assessment by reducing the assumptions regarding consumption rates, residue occurrence, and...
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Is a spot urine sample a good substitution to estimate 24-h urinary sodium excretion in a population ≥ 50 years old? A validation study
PurposeA variety of prediction equations have been able to estimate 24-h urinary sodium excretion from spot urine samples; however, Iranians over the...
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High-Throughput Quantitative LC-MS/MS Analysis of Benzodiazepines in Human Urine
We hereby present a fast, high-throughput, and clinical LC-MS/MS assay for the simultaneous analysis of benzodiazepines in human urine. The assay is...
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Associations of 24 h urinary excretions of α- and γ-carboxyethyl hydroxychroman with plasma α- and γ-tocopherol and dietary vitamin E intake in older adults: the Lifelines-MINUTHE Study
BackgroundUrinary metabolites of vitamin E, i.e., α- and γ-carboxyethyl hydroxychroman (α- and γ-CEHC), have gained increasing attention and have...
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Urinary creatinine concentration and urine color as indicators of specimen validity test
In this study, the concentration of urinary creatinine (Cr) and urine color were analyzed, and a correlation obtained, to objectively verify normal...
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Development of new matrix reference materials for quantitative urine analysis in drug tests
Accurate quantitative analyses require standardized methods to control and improve the analytical process in the laboratory. The availability of...
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Sweet taste receptors play roles in artificial sweetener-induced enhanced urine output in mice
Sweet taste receptors found in oral and extra oral tissues play important roles in the regulation of many physiological functions. Studies have shown...
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Quantitative LC-MS/MS Analysis of Opiates and Opioids in Human Urine
We hereby present a direct, clinical LC-MS/MS assay for the simultaneous analysis of opiates and opioids in human urine. The assay is used as...
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Rapid radiochemical analysis of uranium and plutonium in emergency urine samples
A novel method for rapid radioanalytical measurement of uranium and plutonium in 100ml emergency urine samples was developed, through optimized...
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Quantitation of Bupropion in Urine by Liquid Chromatography-Tandem Mass Spectrometry
Bupropion is a medication commonly used to treat depression and help people quit smoking. However, it has the potential to be misused or diverted, so...
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Biomarkers of exposure in urine of active smokers, non-smokers, and vapers
The exposure to smoking related products has been evaluated through urine illness risk marker determination through the analysis of urine samples of...
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Synthesize of Copper Nanocomposite Mediated Human Urine: Estimated of their Antibacterial Activity
The author presents an efficient method for the synthesis of copper nanocomposites (CuNC) using human urine. The role of human urine on the...
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Investigation of select radionuclides stability in urine under various conditions for liquid scintillation counting (LSC)
Liquid Scintillation Counting (LSC) gross alpha/beta screening is a valuable tool for providing rapid laboratory response for the analysis of human...
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A Liquid Chromatography-Tandem Mass Spectrometry Assay for Quantification of Ethyl Glucuronide and Ethyl Sulfate in Urine
Ethyl glucuronide and ethyl sulfate emerged as the biomarkers of choice for detection of ethanol use as the required sample is urine, enabling easy...
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Iridium(III) solvent complex–based electrogenerated chemiluminescence method for the detection of 3-methylhistidine in urine
3-Methylhistidine (3-MeHis) is increasingly used as an indicator of muscle protein breakdown. The development of a sensitive, simple, and...
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Development of a time-resolved immunochromatographic test strip for rapid and quantitative determination of retinol-binding protein 4 in urine
Urine retinol-binding protein 4 (RBP4) has recently been reported as a novel earlier biomarker of chronic kidney disease (CKD) which is a global...
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Reliability of a dried urine test for comprehensive assessment of urine hormones and metabolites
BackgroundMass spectrometry allows for analysis of multiple hormone and organic acid metabolites from small urine volumes; however, to assess the...
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Smartphone based colorimetric point-of-care sensor for abused drugs: case of baclofen determination in urine
As a GABA-β receptor agonist, the central muscle relaxant Baclofen (BAC) has a potential of abuse. Unfortunately, the sense of wellbeing and pleasure...
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Determination of benzoylecgonine in synthetic urine samples via square-wave voltammetry with boron-doped diamond electrode
This study describes the development of an electroanalytical methodology using square-wave voltammetry (SWV) to quantify benzoylecgonine (BE) in...
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Novel dummy molecularly imprinted polymer for simultaneous solid-phase extraction of stanozolol metabolites from urine
Stanozolol, a synthetic derivative of testosterone, is one of the common doping drugs among athletes and bodybuilders. It is metabolized to a large...
