ELISA Kit for Ciliary Neurotrophic Factor (CNTF)



This assay has high sensitivity and excellent specificity for detection of Ciliary Neurotrophic Factor (CNTF).
No significant cross-reactivity or interference between Ciliary Neurotrophic Factor (CNTF) and analogues was observed.


Matrices listed below were spiked with certain level of recombinant Ciliary Neurotrophic Factor (CNTF) and the recovery rates were calculated by comparing the measured value to the expected amount of Ciliary Neurotrophic Factor (CNTF) in samples.

MatrixRecovery range (%)Average(%)
EDTA plasma(n=5)80-9587
heparin plasma(n=5)86-10299


Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Ciliary Neurotrophic Factor (CNTF) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Ciliary Neurotrophic Factor (CNTF) 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 Ciliary Neurotrophic Factor (CNTF) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

EDTA plasma(n=5)80-102%97-105%83-101%87-104%
heparin plasma(n=5)79-92%97-105%97-104%87-101%


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

Pre-coated, ready to use 96-well strip plate1Plate sealer for 96 wells4
Standard2Standard Diluent1×20mL
Detection Reagent A1×120µLAssay Diluent A1×12mL
Detection Reagent B1×120µLAssay Diluent B1×12mL
TMB Substrate1×9mLStop Solution1×6mL
Wash Buffer (30 × concentrate)1×20mLInstruction manual1

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.



Catalog No.Related products for research use of Homo sapiens (Human) Organism speciesApplications
APA021Hu01Active Ciliary Neurotrophic Factor (CNTF)Cell culture; Activity Assays.
RPA021Hu01Recombinant Ciliary Neurotrophic Factor (CNTF)Positive Control; Immunogen; SDS-PAGE; WB.
PAA021Hu01Polyclonal Antibody to Ciliary Neurotrophic Factor (CNTF)WB; IHC; ICC; IP.
LAA021Hu71Biotin-Linked Polyclonal Antibody to Ciliary Neurotrophic Factor (CNTF)WB; IHC; ICC.
MAA021Hu22Monoclonal Antibody to Ciliary Neurotrophic Factor (CNTF)WB; IHC; ICC; IP.
SEA021HuELISA Kit for Ciliary Neurotrophic Factor (CNTF)Enzyme-linked immunosorbent assay for Antigen Detection.
SCA021HuCLIA Kit for Ciliary Neurotrophic Factor (CNTF)Chemiluminescent immunoassay for Antigen Detection.