Erba Manheim Creatinine Assay Kit

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Panjab University
Biophysics
Research Scientist

Company:

Erba Manheim

Product Name:

Creatinine assay kit

Catalog Number:

120246

Creatinine is a key waste product in muscle from high energy compound, creatine phosphate. The amount of creatinine produced is highly constant and is primarily a function of muscle mass. It is removed from plasma by glomerular filtration and then excreted from urine without any appreciable reabsorbtion by the tubules. Creatinine is an useful indicator of renal function. As part of my work, I was in a search of a highly specific and sensitive protocol for estimation of creatinine as I am working on phytochemicals in the area of kidney stone research and I wanted to analyze effect of phytotherapy on the extent of stone formation as kidney function is mainly impaired of kidney stone. I selected the Erba Manheim calcium assay kit as its instructions are clear and comprehensive enough so that anyone skilled in the sciences could perform the assay. Secondly, in the same kit, it is possible to work on both serum samples as well as on the urine samples. Also, the protocol is sensitive enough to allow estimation in range of 20mg/dl levels and for higher values samples can be diluted with normal saline and results can be calculated by multiplying with dilution factor

Experimental Design and Results Summary

Application

To measure creatinine

Starting Material

Serum samples from rats

Protocol Overview

The principle of the creatinine Assay Kit is creatinine reacts with alkaline picrate to produce an orange-yellow colour (the Jaffes reaction). Specificity of the assay has been improved by introduction of an initital rate method. The absorbance of yellow colour formed is directly proportional to creatinine concentration and is measured photometrically at 500-520nm.

Tips

The kit is sensitive enough to allow estimation in range of 20mg/dl levels and for higher values samples should be diluted with normal saline and results can be calculated by multiplying with dilution factor.

Results Summary

The results obtained were highly reproducible and were comparable to earlier studies in the above research area.

Additional Notes

We received our product from a distributor in India:

http://transasia.co.in/Product_Details.aspx?Mkey=13&CatId=MTU=&SubCatId=MTE=&ProductId=MjAw

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Summary

The Good

The kit is highly sensitive and user friendly.

The Bad

It cannot be used using simple spectrophotometer.

The Bottom Line

I recommend the above Kit for its specificity, sensitivity and reproducibility. The instructions were clear and comprehensive.

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