Kit and method for detecting concentration of fibronectin in urine
A technology of fibronectin and kit, which is applied in the field of bioengineering, can solve the problems of complex concentration process and low accuracy, and achieve the effect of simple and convenient process, high accuracy and remarkable technological progress
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Embodiment 1
[0021] The invention provides a kit for detecting the concentration of fibronectin in urine, comprising two reagents, reagent I consists of disodium hydrogen phosphate, potassium dihydrogen phosphate, PEG6000-8000, disodium edetate ( EDTA-NA 2 ) and Triton 100 (TX-100), in the reagent I, the mass percentage concentration of disodium hydrogen phosphate is 28.6g / L, and the mass percentage concentration of potassium dihydrogen phosphate is 2.7g / L, the mass percentage concentration of described PEG6000 is 50g / L, described EDTA-NA 2 The mass percentage concentration of TX-100 is 1g / L, the volume concentration of the TX-100 is 0.2ml / L, and the II reagent is rabbit anti-human fibronectin antiserum, or goat anti-human fibronectin antiserum, or mouse anti-human Suspension of fibronectin antiserum, or mouse anti-human fibronectin monoclonal antibody cross-linked on latex particles.
[0022] Further, the II reagent is a rabbit anti-human fibronectin antiserum, or goat anti-human fibron...
Embodiment 2
[0027] 2.1 Applicable instruments
[0028] Semi-automatic and fully automatic biochemical analyzers.
[0029] 2.2 Analysis method
[0030] Immunoturbidimetry.
[0031] 2.3 Performance requirements
[0032] 2.3.1 Reagent Appearance
[0033] R1: colorless clear transparent liquid;
[0034] R2: milky white suspension.
[0035] 2.3.2 Reagent blank absorbance (A)
[0036] Absorbance (A): R 1 +R 2 ≤2600A (at a temperature of 37°C; main wavelength 546nm, 600nm (secondary wavelength 700nm)).
[0037] 2.3.3 Precision
[0038] 2.3.3.1 Intra-assay precision
[0039] CV≤10%.
[0040] 2.3.4 Batch-to-batch precision
[0041] The relative range is ≤10%.
[0042] 2.3.5 Accuracy
[0043] Inaccuracy: within the range of ±10%.
[0044] 2.3.6 Analytical sensitivity
[0045] Absorbance (A)>2600A.
[0046] 2.3.7 Linearity
[0047] In the range of 20mg / L-100mg / L, the correlation coefficient (γ)≥0.9900.
[0048] 2.3.8 Stability
[0049] The reagent should be stored in the dark at ...
Embodiment 3
[0050] Embodiment 3 Experimental method
[0051] 3.1 Detection conditions
[0052] 3.1.1 Biochemical analyzer (hereinafter referred to as instrument)
[0053] Hitachi 7060 automatic biochemical analyzer.
[0054] 3.1.2 Working environment temperature
[0055] Room temperature 15-32°C.
[0056] Indoor humidity 45-85%RH.
[0057] 3.1.3 Main measurement parameters and operation steps
[0058]Temperature 37°C; main wavelength 600nm (secondary wavelength 700nm), urine sample or urine calibration standard 3μl; R 1 : 240 μl; R 2 : 60 μl, reaction time 10 minutes.
[0059] Method type: two-point endpoint method.
[0060] After adding reagent R1 to the urine sample or urine calibrator, incubate at 37°C for 5 minutes, read the first point (A1), add reagent R2, incubate at 37°C for 5 minutes, and read the second point (A2), sample A=A2-A1.
[0061] Result calculation:
[0062]
[0063] 3.1.4 Calibrator
[0064] The calibrator used in this standard is the standard product pr...
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