Body Fluid Analysis
Body Fluid Analysis - Related Videos
01:29
Composition of Body Fluids
0 Views •
2024
Water functions as a solvent accommodating various solutes, which can be categorized under electrolytes and non-electrolytes. Non-electrolytes are usually held together by covalent bonds, restricting them from dissociating in solution, thereby leading to a lack of electrically charged components upon dissolving in water. They are predominantly organic molecules, such as glucose, creatinine, and urea. Electrolytes, on the other hand, are compounds that can break down into ions in water.
01:19
Body Water Content and Fluid Compartments
0 Views •
2024
Life's biochemical processes occur within aqueous solutions. Solutes are substances that are dissolved within these solutions. The human body contains a variety of solutes, which can differ across various body parts. These can encompass proteins—such as those responsible for clotting and carbohydrate transport—as well as electrolytes. In medicine, an electrolyte is often described as a mineral ion derived from a salt possessing an electric charge. Examples include sodium ions (Na+) and chloride...
10:23
Sample Preparation for Endopeptidomic Analysis in Human Cerebrospinal Fluid
0 Views •
Cited by 2 •
2017
A method for mass spectrometric analysis of endogenous peptides in human cerebrospinal fluid (CSF) is presented. By employing molecular weight cut-off filtration, chromatographic pre-fractionation, mass spectrometric analysis and a subsequent combination of peptide identification strategies, it was possible to expand the known CSF peptidome nearly ten-fold compared to previous studies.
06:54
Analysis of Pluripotent Stem Cells by using Cryosections of Embryoid Bodies
0 Views •
Cited by 14 •
2010
Pluripotent stem cells growing in suspension differentiate into embryoid bodies (EBs). Here we demonstrate how to obtain high quality EB cryosections useful for studying cellular and molecular aspects of embryogenesis, while preserving their organization as aggregates.
05:05
Dissection of Human Vitreous Body Elements for Proteomic Analysis
0 Views •
Cited by 28 •
2011
This video shows an effective technique for differentiating and dissecting the various semi-transparent structures of the human vitreous body in post mortem eyes.
FAQs
Centrifugation and filtration prepare body fluid samples for downstream measurement by helping organize the material before microscopy, immunoassays, flow cytometry, or nucleic acid testing. These preparation steps matter because the quality and form of the processed sample influence which cellular, biochemical, or molecular features can be examined. In cancer research, this supports evaluation of abnormal cells, proteins, metabolites, or circulating tumor DNA.
Each assay provides a different type of evidence. Microscopy supports visual examination of abnormal cells, whereas immunoassays measure proteins and flow cytometry analyzes cellular features. Nucleic acid testing adds molecular information, including circulating tumor DNA. Selecting among these approaches, or combining them, allows studies to target evidence relevant to cancer detection, classification, treatment monitoring, or disease progression.
Circulating tumor DNA adds a molecular readout to measurements based on cells, proteins, or metabolites. Its detection through nucleic acid testing can therefore contribute to identifying cancer-related changes in a fluid sample. Within cancer research, this information supports liquid biopsy investigations and may help develop personalized diagnostic strategies alongside other analytical measurements.
A typical workflow begins with a collected fluid sample, followed by preparation steps such as centrifugation and filtration. The processed material is then examined using microscopy, immunoassays, flow cytometry, or nucleic acid testing. Researchers interpret the resulting cellular, biochemical, or molecular measurements in relation to cancer detection, classification, treatment monitoring, or disease progression.
Cancer studies can use measured abnormalities in cells, proteins, metabolites, or circulating tumor DNA for several purposes. The same general analytical framework may support detection, help classify disease, monitor responses during treatment, or evaluate progression. The specific outcome depends on which features are measured and which method, such as microscopy or molecular testing, is applied.
Because body fluid collection is often minimally invasive, researchers can investigate cancer-related cellular, biochemical, and molecular signals without relying solely on more invasive sampling approaches. This characteristic supports liquid biopsy research, while the resulting measurements can contribute to personalized diagnostic strategies. Blood, urine, cerebrospinal fluid, and ascites are among the fluid types examined in these studies.