Blood Sample Analysis
Blood Sample Analysis - Related Videos
07:11
Sampling Blood from the Lateral Tail Vein of the Rat
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Cited by 82 •
2015
Blood samples are useful for assessing biomarkers of physiological states or disease in vivo. Here we describe the methodology to sample blood from the lateral tail vein in the rat. This method provides rapid samples with minimal pain and invasiveness.
10:16
Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
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Cited by 186 •
2016
The protocol below describes the methodology for: microplastics sampling on the sea surface, separation of microplastic and chemical identification of particles. This protocol is in line with the recommendations for microplastics monitoring published by the MSFD Technical Subgroup on Marine Litter.
04:10
Detection of Rhesus Factor in Human Blood Samples using Magnetic Levitation
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2025
This video demonstrates the detection of the Rhesus (Rh) factor in blood samples using a magnetic levitation instrument. The magnetic field aligns and levitates beads and blood cells based on density. Treating the samples with anti-Rh antibodies results in intermediate-density bead-cell complexes' formation, allowing for the differentiation of Rh-positive and Rh-negative red blood cells.
03:50
CTC Isolation from a Whole Blood Sample: A Method to Obtain CTCs from Murine Colorectal Cancer Model
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2023
This video describes a detailed protocol for isolating circulating tumor cells from the whole blood sample of a euthanized colorectal tumor mouse model. These isolated CTCs can be cultured and used for intended downstream analysis.
06:39
Through-the-Wall Blood Sampling Method to Minimize Sleep Disruption in Clinical Settings
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Cited by 1 •
2025
Here, we present a through-the-wall, minimally invasive method to sample blood during sleep in clinical settings.
FAQs
Centrifugation helps partition a blood sample into cellular components and a liquid fraction such as plasma or serum. That separation reduces the mixture of material presented to an assay and allows the selected fraction to be examined for chemical constituents, proteins, or other biomarkers. The resulting fraction therefore connects sample preparation with the specific measurement being performed.
Different measurements answer different biological questions. Cell counts can show changes in the cellular portion, whereas glucose, enzymes, and electrolytes describe chemical status. Hormones, proteins, and immune markers provide additional biochemical or immunological signals. Considering these categories together can help relate laboratory findings to physiological or pathological states rather than relying on one measurement alone.
Instrument choice follows the type of target being measured. Hematology instruments are suited to blood-cell measurements, biochemical assays address constituents such as glucose, enzymes, and electrolytes, and immunoassays examine targets including hormones, proteins, or immune markers. This division matters because the analytical approach must match the component or biomarker selected for the biological question.
Controlled collection conditions improve the interpretability of results by making samples more comparable before processing and measurement. Consistent handling supports clearer comparison of cell counts, chemical constituents, proteins, and other biomarkers. In biological techniques, this control is important because differences observed after analysis should reflect biological variation as reliably as possible rather than inconsistent sample preparation.
A practical workflow begins with collection, continues with preparation of the sample, and then directs the appropriate fraction to an analytical platform. Centrifugation may separate plasma or serum from cellular components before testing. The final choice among hematology instruments, biochemical assays, and immunoassays depends on the measurements required for the biological question.
Blood sample analysis supports several distinct purposes, including disease diagnosis, treatment monitoring, clinical research, toxicology, and evaluation of normal biological functions. Its value comes from the range of measurable indicators, from blood-cell counts and glucose to enzymes, electrolytes, hormones, and immune markers. Researchers can therefore select measurements that fit a particular physiological or pathological investigation.