ELISA Kit for Cyclooxygenase-2 (COX 2)

PGG/HS; PGHS2; PHS2; HCox2; PTGS2; Prostaglandin Endoperoxide Synthase 2; Prostaglandin G/H Synthase And Cyclooxygenase; Prostaglandin H2 synthase 2


This assay has high sensitivity and excellent specificity for detection of Cyclooxygenase-2 (COX 2).
No significant cross-reactivity or interference between Cyclooxygenase-2 (COX 2) and analogues was observed.


Matrices listed below were spiked with certain level of recombinant Cyclooxygenase-2 (COX 2) and the recovery rates were calculated by comparing the measured value to the expected amount of Cyclooxygenase-2 (COX 2) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 95-104 101
EDTA plasma(n=5) 80-92 85
heparin plasma(n=5) 93-101 96


Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Cyclooxygenase-2 (COX 2) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Cyclooxygenase-2 (COX 2) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%


The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Cyclooxygenase-2 (COX 2) 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) 89-97% 81-96% 93-101% 98-105%
EDTA plasma(n=5) 89-103% 79-103% 90-97% 84-99%
heparin plasma(n=5) 78-91% 92-102% 82-101% 86-98%


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
Pre-coated, ready to use 96-well strip plate 1 Plate sealer for 96 wells 4
Standard 2 Standard Diluent 1×20mL
Detection Reagent A 1×120µL Assay Diluent A 1×12mL
Detection Reagent B 1×120µL Assay Diluent B 1×12mL
TMB Substrate 1×9mL Stop Solution 1×6mL
Wash Buffer (30 × concentrate) 1×20mL Instruction manual 1

Assay procedure summary

1. Prepare all reagents, samples and standards;
2. Add 100µL standard or sample to each well. Incubate 1 hours at 37°C;
3. Aspirate and add 100µL prepared Detection Reagent A. Incubate 1 hour at 37°C;
4. Aspirate and wash 3 times;
5. Add 100µL prepared Detection Reagent B. Incubate 30 minutes at 37°C;
6. Aspirate and wash 5 times;
7. Add 90µL Substrate Solution. Incubate 10-20 minutes at 37°C;
8. Add 50µL Stop Solution. Read at 450nm immediately.



Magazine Citations
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Skin Cancer - MedlinePlus Health Information Molecular mechanisms underlying chemopreventive activities of glycyrrhizic acid against UVB-radiation-induced carcinogenesis in SKH-1 hairless mouse epidermis PubMed: 21545294
Evidence-Based Complementary and Alternative Medicine Curcumin Protects against UVB-Induced Skin Cancers in SKH-1 Hairless Mouse: Analysis of Early Molecular Markers in Carcinogenesis PubMed: 22888366
Integrative Cancer Therapies Decalepis hamiltonii inhibits tumor progression and metastasis by regulating the inflammatory mediators and nuclear factor κB subunits Pubmed: 24013642
Journal of ethnopharmacology Multitargeted protective effect of Abacopteris penangiana against carrageenan-induced chronic prostatitis in rats. Pubmed: 24211397
Int J Clin Exp Pathol Relationship between epidermal growth factor receptor (EGFR) mutation and serum cyclooxygenase-2 Level, and the synergistic effect of celecoxib and gefitinib on EGFR expression in non-small cell lung cancer cells PubMed: 26464643
Int J Clin Exp Pathol Monitoring of cyclooxygenase-2 levels can predict EGFR mutations and the efficacy of EGFR-TKI in patients with lung adenocarcinoma PubMed: 26191267
Journal of Biomechanics The shear wave elastic modulus and the increased nuclear factor kappa B(NF-kB/p65) and cyclooxygenase-2 (COX-2) expression in the area of myofascial trigger points activated in a rat model by blunt trauma to the vastus medialis pubmed:29137729
Journal of Global Pharma Technology Inflammatory Response of Annona Muricata Linn Leaves Extract in Colorectal Cancer Patients NCT02439580
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