Multiplex Assay Kit for Pepsin (PP) ,etc. by FLIA (Flow Luminescence Immunoassay)
(Note: Up to 8-plex in one testing reaction)
- UOM
- FOB US$ 427.00 US$ 443.00 US$ 468.00 US$ 501.00 US$ 534.00 US$ 583.00 US$ 657.00 US$ 821.00
- Quantity
Overview
Properties
- Product No.LMA632Ra
- Organism SpeciesRattus norvegicus (Rat) Same name, Different species.
- ApplicationsFLIA Kit for Antigen Detection.
Research use only - DownloadInstruction Manual
- CategoryEnzyme & KinaseMetabolic pathwayTumor immunityGastroenterology
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Recovery
Matrices listed below were spiked with certain level of recombinant Pepsin (PP) ,etc. by FLIA (Flow Luminescence Immunoassay) and the recovery rates were calculated by comparing the measured value to the expected amount of Pepsin (PP) ,etc. by FLIA (Flow Luminescence Immunoassay) in samples.
Matrix | Recovery range (%) | Average(%) |
serum(n=5) | 95-102 | 99 |
EDTA plasma(n=5) | 89-97 | 93 |
heparin plasma(n=5) | 95-103 | 101 |
Precision
Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Pepsin (PP) ,etc. by FLIA (Flow Luminescence Immunoassay) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Pepsin (PP) ,etc. by FLIA (Flow Luminescence Immunoassay) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%
Linearity
The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Pepsin (PP) ,etc. by FLIA (Flow Luminescence Immunoassay) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Sample | 1:2 | 1:4 | 1:8 | 1:16 |
serum(n=5) | 93-102% | 91-103% | 87-95% | 93-102% |
EDTA plasma(n=5) | 91-98% | 96-105% | 95-102% | 86-93% |
heparin plasma(n=5) | 96-104% | 83-101% | 83-94% | 78-89% |
Stability
The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.
Reagents and materials provided
Reagents | Quantity | Reagents | Quantity |
96-well plate | 1 | Plate sealer for 96 wells | 4 |
Pre-Mixed Standard | 2 | Standard Diluent | 1×20mL |
Pre-Mixed Magnetic beads (22#:PP) | 1 | Analysis buffer | 1×20mL |
Pre-Mixed Detection Reagent A | 1×120μL | Assay Diluent A | 1×12mL |
Detection Reagent B (PE-SA) | 1×120μL | Assay Diluent B | 1×12mL |
Sheath Fluid | 1×10mL | Wash Buffer (30 × concentrate) | 1×20mL |
Instruction manual | 1 |
Assay procedure summary
1. Preparation of standards, reagents and samples before the experiment;
2. Add 50μL standard or sample to each well,
add 10μL magnetic beads,and 50μL Detection Reagent A,incubate 60min at 37°C on shaker;
3. Wash plate on magnetic frame for three times;
4. Add 100μL prepared Detection Reagent B, and incubate 30 min at 37°C on shaker;
5. Wash plate on magnetic frame for three times;
6. Add 100μL sheath solution, swirl for 2 minutes, read on the machine.

Test principle
Analyte-specific antibodies are pre-coated onto color-coded microparticles. Microparticles, standards,Labeled antigen and samples are pipetted into wells and the immobilized antibodies bind the analytes of interest.A competitive inhibition reaction is launched between biotin labeled analytes of interest and unlabeled analytes of interest (Standards or samples) with the pre-coated antibody specific to analytes of interest. Following a wash to remove any unbound substances, Streptavidin-Phycoerythrin conjugate (Streptavidin-PE) is added to each well. A final wash removes unbound Streptavidin-PE and the microparticles are resuspended in buffer and read using the Luminex or Bio-Plex analyzer. The MFI developed is reverse proportional to the concentration of analytes of interest in the sample.
Giveaways
Increment services
Citations
- LEVEL OF PEPSIN AND BILE ACIDS IN THE SALIVA OF PATIENTS WITH GLOTTIS T1 CARCINOMASzd:Source
- Higher levels of total pepsin and bile acids in the saliva as a possible risk factor for early laryngeal cancerPubmed:Pmc4362607
- Pepsin and bile acids in saliva in patients with laryngopharyngeal reflux – a prospective comparative studyPubMed: 25516364
- Does Positioning Affect Tracheal Aspiration of Gastric Content in Ventilated Infants?PubMed: 25313850
- Detecting Laryngopharyngeal Reflux by Immunohistochemistry of Pepsin in the Biopsies of Vocal Fold Leukoplakiapubmed:28756936
- Label-Free Detection of Salivary Pepsin Using Gold Nanoparticle/Polypyrrole Nanocoral Modified Screen-Printed ElectrodePubmed:29882917
- Association between Pepsin in Bronchoalveolar Lavage Fluid and Prognosis of Chronic Fibrosing Interstitial Lung Disease
- Pulmonary aspiration in preschool children with cystic fibrosisPubmed: 30558606
- Association of Bile Acid and Pepsin Micro-aspiration with Chronic Obstructive Pulmonary Disease ExacerbationPubmed: 31423141
- Optimization of Saliva Collection and Immunochromatographic Detection of Salivary Pepsin for Point-of-Care Testing of Laryngopharyngeal RefluxPubmed: 31935973
- Presence of pepsin in laryngeal tissue and saliva in benign and malignant neoplasmsPubmed: 33103719
- Relationship Between Pepsin Expression and Dysplasia Grade in Patients With Vocal Cord LeukoplakiaPubmed: 32692278
- Association of pepsin and DNA damage in laryngopharyngeal reflux-related vocal fold polypsPubmed: 32889371
- The relationship between laryngopharyngeal reflux based on pepsin value and clinical characteristics of laryngeal cancer patients
- The Role of Salivary Pepsin in the Diagnosis of Gastroesophageal Reflux Disease (GERD) Evaluated Using High-Resolution Manometry and 24-Hour?¡33220027
- Pepsin properties, structure, and its accurate measurement: a narrative review
- The Impact of Laryngopharyngeal Reflux on Occurrence and Clinical Course of Recurrent Respiratory Papillomatosis34338331
- Bronchoalveolar lavage (BAL) amylase and pepsin levels as potential biomarkers of aspiration pneumoniaPubmed:35715334
- Transcutaneous Electrical Acustimulation Improved the Quality of Life in Patients With Diarrhea-Irritable Bowel SyndromePubmed:35088760