CLIA Kit for Insulin Like Growth Factor 2 (IGF2)

INSIGF; IGF-II; Somatomedin A; Preptin; Insulin-like growth factor II Ala-25 Del

Specificity

This assay has high sensitivity and excellent specificity for detection of Insulin Like Growth Factor 2 (IGF2).
No significant cross-reactivity or interference between Insulin Like Growth Factor 2 (IGF2) and analogues was observed.

Recovery

Matrices listed below were spiked with certain level of recombinant Insulin Like Growth Factor 2 (IGF2) and the recovery rates were calculated by comparing the measured value to the expected amount of Insulin Like Growth Factor 2 (IGF2) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 96-105 101
EDTA plasma(n=5) 80-88 80
heparin plasma(n=5) 78-98 90

Precision

Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Insulin Like Growth Factor 2 (IGF2) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Insulin Like Growth Factor 2 (IGF2) 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 Insulin Like Growth Factor 2 (IGF2) 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) 94-102% 81-92% 91-99% 78-101%
EDTA plasma(n=5) 84-98% 85-99% 94-102% 90-97%
heparin plasma(n=5) 91-99% 91-101% 80-97% 96-105%

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
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
Substrate A 1×10mL Substrate B 1×2mL
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 100µL Substrate Solution. Incubate 10 minutes at 37°C;
8. Read RLU value immediately.

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Magazine Citations
international Journal of food and nutritional sciences EVALUATION OF PHYSICO-CHEMICAL PROPERTIES OF COLOSTRUM SUPPLEMENTED DAHI Ijfans: Source
International Journal of Chemical Studies Studies on quality attributes of skimmed colostrum powder P-ISSN: 2349–8528
Neurobiology of Disease Increased motor neuron resilience by small molecule compounds that regulate IGF-II expression Pubmed:29113829
Advanced Science IGFBP2 Plays an Essential Role in Cognitive Development during Early Life Pubmed: 31832311
PLoS One Altered insulin-like growth factor-2 signaling is associated with psychopathology and cognitive deficits in patients with schizophrenia Pubmed: 32191705
Current Medical Science Changes of Serum Insulin-like Growth Factor-2 Response to Negative Symptom Improvements in Schizophrenia Patients Treated with Atypical Antipsychotics Pubmed: 32681260
ACS Omega Gastrodin Exerts Cardioprotective Action via Inhibition of Insulin-Like Growth Factor Type 2/Insulin-Like Growth Factor Type 2 Receptor Expression in Cardiac … 34250336
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