17 results about "Dried blood" patented technology

The application discloses a collecting device for quantitatively collecting dry blood spots, which comprises a sample collecting ring with both ends being permeable, a sample carrying sheet and a quantitative capillary for sampling, and the sample carrying sheet is detachably arranged in the sample collecting ring. The application also discloses a collecting method for collecting dry blood spots by using the collecting device. The application can quantitatively collect blood samples, and the sample can be directly sealed and sent without drying, punching and sampling, so as to reduce cross contamination, improve the accuracy of quantitative detection results of the dry blood spots, and make the quantitative collection, preservation, sample information input and sample sending operation of the sample be integrally completed by the device.

The invention relates to the technical field of assay and inspection, in particular to a method for detecting ceramide and phosphatidyl ethanolamine in neonatal dried blood spots, and the preparation method comprises the following steps: S1, drawing a standard curve equation: preparing an internal standard extract; preparing a mixed standard solution; preparing standard substance solutions with a series of concentrations; adding the internal standard extraction liquid into the standard substance solution, carrying out pretreatment, and carrying out HPLC-MS / MS detection to respectively obtain a ceramide standard curve and a phosphatidyl ethanolamine standard curve; and S2, detecting the contents of ceramide and phosphatidyl ethanolamine in the dried blood spot to be detected, namely adding the internal standard extract into the dried blood spot to be detected, performing pretreatment, performing HPLC-MS / MS detection, and obtaining the contents of ceramide and phosphatidyl ethanolamine according to a ceramide standard curve and a phosphatidyl ethanolamine standard curve respectively. The detection method provided by the embodiment of the invention has the characteristics of high accuracy, good sensitivity, stability and simplicity and convenience in operation.

The invention belongs to the technical field of biological detection, and particularly relates to a method for analyzing and detecting IgG N-glycan in dried blood spots. The dried blood spot sample is adopted to replace a traditional serum sample, so that the technical problem of IgG N-carbohydrate chain degradation under the normal-temperature storage condition of the serum sample is effectively solved, and the stability of the sample and the reliability of a detection result are remarkably improved. The dried blood spot sample collecting method is simple and convenient, vein blood sampling is not needed, the method is suitable for large-scale screening and application of special crowds, and the clinical application range of IgG N-glycan analysis is widened. Besides, the dried blood spot sample can be stored for a long time at room temperature, the transportation and storage cost is reduced, meanwhile, analysis can be completed only through a trace amount of blood, the method is suitable for repeated sampling and long-term monitoring, and a technical support is provided for research and application of IgG glycosylation as a biomarker.

The application provides a liquid chromatography-mass spectrometry method for detecting phytosterol content in dried blood spots, and belongs to the technical field of detection.The application simplifies a sampling process, uses a disposable blood taking needle and a blood taking card for sampling, replaces traditional serum or plasma samples with obtained dried blood spots, punches a sampling area of the dried blood spot sample through a puncher with a diameter of 3.2 mm, takes three dried blood spot samples, extracts seven kinds of sterol substances contained in the dried blood spot samples through n-hexane, adopts liquid chromatography-mass spectrometry, carries out detection and quantification through chromatographic separation and a mass spectrometry detector, realizes rapid and accurate determination of cholesterols, beta-sitosterols, daidzein, campesterol, dihydrocholesterol, dehydrocholesterol and 7-alkenyl cholestanol, and the method is simple in operation, accurate in quantification, and has a recovery rate of 92.4%-96.7%.

Provided are methods and kits for blood sample collection, protein extraction, and analysis of neuro biomarkers obtained from blood samples on dried blood drop cards.

The present invention provides methods, compositions, kits, and devices for detecting heavy metals in dried blood (e.g., dried blood spots). For example, the present invention provides: 1) dried blood spot paper that is detectably free of heavy metals and methods of preparing such paper using organic acid; 2) dried blood extraction solutions optimized for heavy metal detection (e.g., extraction solutions containing acetic acid and / or gold); 3) methods for estimating venous blood volume from dried blood mass; and 4) kits and kit components optimized for heavy metal detection in dried blood (e.g., kits with paper detectably free of heavy metals, heavy metal free skin wipes, metal free collection case, etc.).

This invention belongs to the field of biomedical technology and discloses a DBS-LC-MS / MS method for the simultaneous detection of seven types of metabolites in dried blood spots. The method employs a pH / polarity dual-trigger microcapsule solvent carrier system, which internally encapsulates high, medium, and low polarity extraction solvents in layers. During extraction, these solvents are released sequentially according to local pH and polarity changes, efficiently extracting amino acids, acylcarnitines, organic acids, bile acids, steroids, fatty acids, and sugar metabolism intermediates, respectively. This invention overcomes the inherent limitations of traditional static solvent systems and solves the problem of unbalanced recovery rates caused by insufficient solvent compatibility in the extraction of seven types of metabolites with vastly different polarities in dried blood spots. It significantly improves the accuracy, reproducibility, and coverage of the DBS-LC-MS / MS platform in the simultaneous detection of multiple metabolites, providing reliable technical support for newborn screening for inherited metabolic diseases, diagnosis of endocrine diseases, and drug metabolism research.

This utility model relates to the field of blood dripping device technology, and discloses a blood genetic metabolic spectrum dried blood smear blood dripping auxiliary device, including a support, on which a sleeve is installed. A receiving groove is opened on one side of the sleeve for placing the barrel of a syringe. A bleeding head is installed at the bottom of the sleeve. After the limiting plate assembly is moved away from the top of the receiving groove, the barrel of the syringe is placed into the receiving groove, and then the limiting plate assembly is rotated to limit the movement distance of the core rod. At this time, the core rod of the syringe can be moved to squeeze the blood in the barrel, so that the blood drips onto the cardboard through the bleeding head. The limiting plate assembly can prevent excessive blood from dripping, increasing the accuracy of detection. Furthermore, the lifting and adjusting mechanism can drive the connecting plate assembly and the limiting plate assembly to move, thereby adjusting the position of the limiting plate assembly to drip different amounts of blood, solving the problem of not being able to accurately control the blood dripping volume in the prior art.

The utility model provides a puncher with a sample collecting structure, which comprises a punching equipment body and a sample placing component, and the sample placing component used for placing a dried blood filter paper sample is arranged on the left side in the punching equipment body. Compared with the prior art, the dry blood filter paper sample collecting device has the advantages that the punching device body is arranged to be matched with the sample containing assembly, workers do not need to stand for all the time, and therefore the work efficiency is improved, and the labor intensity of workers is reduced. The labor intensity of operators can be reduced, the operators do not need to watch in front of the equipment all the time, a large number of samples can be treated, and the treated filter paper samples are collected into the corresponding sorted collection barrels according to the sequence by arranging the liftable collection assembly, so that subsequent sample operation is facilitated, and the working efficiency is improved. And the equipment can deal with large-batch sample processing work.

The application provides a solution for reconstituting dry blood spots and a preparation method and application thereof, and belongs to the technical field of medical detection. The solution for reconstituting dry blood spots is a buffer solution containing the following components: 0.1-10 mM antioxidant, 2%-10% protein stabilizer in terms of mass percentage, 0.01%-1% surfactant in terms of mass percentage and 0.1-5 mM metal ion chelating agent; and the buffer pH value of the solution is 7.0-8.0. In the reconstitution process of the dry blood spots, the solution avoids the denaturation and degradation of antibodies, protects the activity of the antibodies, thereby ensuring the accuracy of the detection results, reducing the amount of dry blood spot samples in the immunological experiment, and greatly reducing the experimental cost and operation difficulty.

The invention relates to the technical field of assay and inspection, in particular to a detection kit for ceramide and phosphatidyl ethanolamine in neonatal dried blood spots and a use method of the detection kit, and the detection kit comprises a calibration product, a dried blood spot quality control product, an internal standard stock solution, an extracting solution, a mobile phase additive and a plurality of microwell plates. The detection kit and the use method thereof have the characteristics of high accuracy, good sensitivity, stability and simplicity and convenience in operation.

This invention relates to the field of automated detection technology, specifically to an optimized disposable adhesive pin and automated punching method and system for dried blood smear sample collection. The method includes the following steps: acquiring the disc number sequence and status code to construct a status vector; comparing and generating an insertion docking table; extracting punching coordinates and correcting offsets; binding parameters to construct a cutting command; controlling the cutting and identifying channel coding features; acquiring displacement and performing consistency judgment to form a completion mark; updating the status vector and remapping empty space relationships. In this invention, by real-time recognition of the dried blood spot disc barcode image and comparison of the coding vector, a one-to-one match between the disc and empty space states is achieved. Coordinate difference correction is completed before the insertion action, effectively avoiding the accumulation of cutting position errors, effectively avoiding the problem of duplicate or missing sample information insertion, improving overall insertion efficiency and accurate traceability, and ensuring the reliability and continuity of automated processing of large batches of samples.

This invention discloses a method for quantitatively detecting sunitinib (SUN) and N-deethylsunitinib (SU12662) in dried blood spots and its application. This invention employs quantitative dried blood spot (qDBS) sampling combined with LC-MS / MS detection. By using fixed-volume sample loading and whole-spot sampling, hematocrit interference is eliminated. Under specific chromatographic and mass spectrometric conditions, precise quantification of SUN and SU12662 in dried blood spots is achieved. Simultaneously, this invention establishes a dried blood spot-plasma concentration conversion model, converting whole blood concentrations to clinically applicable plasma concentrations, forming a home sampling protocol for sunitinib treatment monitoring. This method requires only 15 μL of fingertip blood, the sample is stable and easy to store and transport, exhibits good linearity, high sensitivity, and minimal matrix effect, and can tolerate 30%–50% hematocrit fluctuations. It allows for home self-collection, is non-invasive and convenient, and the results are highly consistent with clinical venous blood collection, effectively improving patient compliance and accessibility to treatment monitoring. It is suitable for personalized sunitinib medication guidance.

Management of the health status of an animal colony using a plurality of blood collection cards and the analysis of dried blood from members of the colony that has been collected on the cards. Members of the colony may be removed from the colony as a result of the analysis.

The utility model relates to spray drying equipment for pig blood globulin powder, belongs to the technical field of spray drying of pig blood globulin powder, prevents caking of dried pig blood globulin powder to a certain extent, and is good in comprehensive practicability. The vibration motor is detachably mounted in the bottom plate through a mounting groove formed in the bottom plate, and an eccentric block is fixedly welded to the output end of the vibration motor; the vibration disc is fixedly welded to the output end of the vibration motor; one end of the buffer spring is fixedly arranged on the vibration disc, and the other end of the buffer spring is fixedly provided with a material receiving barrel; the drying device comprises a bottom plate, two L-shaped supports and a drying cylinder, the two L-shaped supports are fixedly welded to the bottom plate, and the drying cylinder is fixedly welded between the two L-shaped supports; one end of the O-shaped silica gel ring is fixedly mounted on the drying cylinder through a flange, and the other end of the O-shaped silica gel ring is fixedly mounted on the material receiving cylinder through a flange; and the atomization drying mechanism is arranged in the drying cylinder and is used for atomizing the pig blood globulin solution and drying the pig blood globulin solution into powder.

The application discloses a blood sample storage and transportation device for a neonatal intensive care unit, which comprises a box body, a first storage chamber, a second storage chamber and a third storage chamber are arranged in the box body; a first drawer is slidably arranged in the first storage chamber, a first storage part for storing sampling information materials is arranged on the first drawer, a second drawer is slidably arranged in the second storage chamber, a second storage part for storing blood collection tubes is arranged on the second drawer, a third drawer is slidably arranged in the third storage chamber, and a third storage part for storing dried blood spots is arranged on the third drawer; and cold source chambers are arranged on the two sides of the second storage chamber. The blood sample storage and transportation device can stably store different types of samples and is convenient to transport.