Creatinine Assay Kit
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(167 Publications)
- BIOVISION® assay kit
- Biochemical assay
Lab
Biochemical assay - Creatinine Assay Kit (AB65340)
Diagram showing the principles of the Creatinine assay method.
- Biochemical assay
PubMed
Biochemical assay - Creatinine Assay Kit (AB65340)
Creatinine Assay Kit ab65340 used with mouse plasma.
Sung et al used Creatinine Assay Kit ab65340 to measure differences in plasma creatinine levels between normoglycemia (NG) and diabetes mellitus (DM) PINK1 KO and normal mice.
Plasma samples were collected from each mouse at the time of sacrifice. Plasma creatinine levels were measured using a creatinine ELISA kit (Creatinine Assay kit, Abcam, ab65340, Cambridge, UK) following the manufacturer's instructions.
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Lab
Functional Studies - Creatinine Assay Kit (AB65340)
Creatinine measured in mouse and human serum plotted against RFU. Samples were diluted 5-10 fold.
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Lab
Functional Studies - Creatinine Assay Kit (AB65340)
Creatinine measured in mouse and human urine plotted against RFU. Samples were diluted 400-800 fold.
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Unknown
Functional Studies - Creatinine Assay Kit (AB65340)
Creatinine levels in filtered human urine was measured in the presence or absence of creatininase (background signal subtracted).
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Unknown
Functional Studies - Creatinine Assay Kit (AB65340)
Mice were injected i.p. with 6-ECDCA before I/R injury. At 24 h after I/R, kidney, serum and urine samples were collected for measurements of creatinine in serum with ab65340
Gai, Zhibo et al., Scientific reports vol. 7,1 9815., Fig 2, doi:10.1038/s41598-017-10168-6
- FuncS
Lab
Functional Studies - Creatinine Assay Kit (AB65340)
Standard curve : mean of duplicates (+/- SD) with background reads subtracted
- FuncS
Lab
Functional Studies - Creatinine Assay Kit (AB65340)
Standard curve : mean of duplicates (+/- SD) with background reads subtracted
- Biochemical assay
PubMed
Biochemical assay - Creatinine Assay Kit (AB65340)
Mouse Albumin ELISA kit ab108792 and Creatinine Assay Kit ab65340 used with mouse urine.
Szabo et al measured urine albumin and urine albumin creatinine ratio in wildtype, and Epcam and Tacstd2 null mice.
To collect urine, 2-3 week old mice were held over plastic sheet for up to 30 s with lightly stroking the belly to allow urination. Urine was then transferred into an Eppendorf tube, cleared by centrifugation, and stored at −80°C until analyzed. 1 µl of urine was used to measure albumin concentration by colorimetric ELISA assay (Mouse Albumin ELISA kit, ab108792, Abcam) according to the manufacturer's protocol. To determine creatinine concentration, 2 µl of urine were used in a colorimetric assay (Creatinine Assay Kit, ab65340, Abcam). At the conclusion of the assay, absorbances were read on Synergy Neo microplate reader (Agilent Biotek, Santa Clara, CA, USA). All standards and samples were measured in duplicates and the concentrations were determined from the average of the two values.
- Biochemical assay
PubMed
Biochemical assay - Creatinine Assay Kit (AB65340)
Urea Assay Kit ab83362 used to measure blood urea nitrogen with mouse serum, and Mouse Albumin ELISA kit ab108792 and Creatinine Assay Kit ab65340 used to measure albumin-creatinine ratio with mouse urine.
Widjaja et al subjected IL11 null mice and wild type controls to acute kidney injury and ran a blood urea nitrogen assay (Urea Assay Kit ab83362), and measured urine albumin-creatinine ratio using Mouse Albumin ELISA kit ab108792 and Creatinine Assay Kit ab65340.
Red indicates acute kidney injury. AKI was induced by intraperitoneal (IP) injection of folic acid (FA, 200 mg/kg) in vehicle (0.3 M NaHCO3) to 10–12-week-old male mice; control mice were administered vehicle alone.
All ELISA and colorimetric assays were performed according to the manufacturer’s protocol.
- Other
Supplier Data
Other - Creatinine Assay Kit (AB65340)
Representative image of Creatinine Assay Kit ab65340
Components shown from left to right :
- OxiRed Probe
- Creatinase
- Creatinine Standard
- Sarcosine Enzyme Mix
- Creatininase
- Assay Buffer 2
Note : The vial labels shown in this image use generic names for illustrative purposes only and may not exactly match the specific component names included in the kit.
Note : Colors of solutions in image may not precisely match the shade of colors in the actual kit.
Product details
Creatinine Assay Kit ab65340 provides an accurate, convenient measure of creatinine concentration in biological fluids such as serum, urine or CSF.
How the assay works
In the creatinine assay protocol, creatinine is converted to creatine by creatininase, creatine is converted to sarcosine by creatinase. Sarcosine is then oxidized by sarcosine oxidase producing hydrogen peroxide. Hydrogen peroxide is then processed by a peroxidase causing a reaction with a probe to generate red color (λmax = 570 nm) and fluorescence (Ex/Em = 535/587 nm).
Creatinine assay protocol summary
- - Add samples and standards to wells.
- - Add reaction mix and incubate for 60 min at 37°C.
- - Analyze with microplate reader.
Getting the best performance from ab65340
Unlike picric acid assays, this kit is suitable for serum creatinine determinations, as well as for urine and other biological samples.
For deproteinization of samples: Better results are typically seen with this assay when using a 10kda filter for sample deproteinization than when using the PCA method.
Related and recommended products
Creatinine assay kit ab65340 is commonly used by researchers to measure kidney function.
Kidney function marker assays include:
- - Creatinine Assay Kit ab65340 - suitable for use as a serum creatinine assay and a urine creatinine assay.
- - Mouse Albumin ELISA Kit ab108792 and Human Albumin ELISA Kit ab227933 – suitable for use with serum/plasma and urine
- - Albumin (BCG) Assay Kit (Colorimetric) ab235628 – suitable for use with serum
- - Urea Assay Kit ab83362 – suitable for use with serum/plasma and urine, and used as a blood urea nitrogen assay.
The albumin-creatinine ratio is often measured by using in combination Creatine Assay Kit ab65340, and either Mouse Albumin ELISA Kit ab108792 or Human Albumin ELISA Kit ab227933.
The urea-creatinine ratio is often measured by using in combination Urea Assay Kit ab83362 and Creatinine Assay Kit ab65340.
Albumin Creatinine Ratio Assay Kit ab241018 is suitable for urine and serum, and combines a fluorescent albumin assay with a colorimetric creatinine assay in a convenient pack.
Creatinine assay methods
There are two established methods of creatinine assays:
- Jaffe assay
The Jaffe assay method is based on the reaction of creatinine with picric acid at an alkaline pH. The creatinine‐picrate complex has an absorbance of 500 nm.
- Enzymatic creatinine assay
The standard enzymatic creatinine assay uses the method described above for ab65340.
The Jaffe method is substantially simpler and cheaper than enzymatic creatinine assays, however it suffers substantially from interference by metabolites found in urine and serum.
Other notes
This product is manufactured by BioVision, an Abcam company and was previously called K625 Creatinine Colorimetric/Fluorometric Assay Kit. K625-100 is the same size as the 100 test size of ab65340.
REACH authorisation
Abcam has not and does not intend to apply for the REACH Authorisation of customers' uses of products that contain European Authorisation list (Annex XIV) substances.
It is the responsibility of our customers to check the necessity of application of REACH Authorisation, and any other relevant authorisations, for their intended uses.
What's included?
Properties and storage information
Shipped at conditions
Appropriate short-term storage conditions
Appropriate long-term storage conditions
Storage information
Supplementary information
This supplementary information is collated from multiple sources and compiled automatically.
Biological function summary
In the human body creatinine plays an integral role in reflecting muscle metabolism rates and biochemical balance. Creatinine levels aid in assessing glomerular filtration rate (GFR) an important measure of kidney function. It is not part of a protein complex as it results from muscle activity. Its levels in blood and urine help calculate the protein to creatinine ratio providing insights into renal health. The constant exchange and excretion of creatinine make it a reliable biomarker in metabolism studies.
Pathways
Muscle metabolism and kidney filtration both involve creatinine's function. Creatinine formation and elimination connect to pathways that maintain homeostasis and waste removal. Key proteins in these pathways include creatine kinase which catalyzes the conversion of creatine to creatine phosphate. The creatinine protein ratio becomes relevant in evaluating proteinuria a condition where excess protein is present in urine indicating possible kidney dysfunction.
Product protocols
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Publications (167)
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Scientific reports 15:18455 PubMed40425613
2025
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PloS one 20:e0323605 PubMed40359212
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Nature communications 16:3953 PubMed40289112
2025
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Inflammation : PubMed40095256
2025
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Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology 20:26 PubMed40095208
2025
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Journal of agricultural and food chemistry 73:6970-6980 PubMed40063978
2025
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Advanced biology 9:e2400437 PubMed39960128
2025
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American journal of translational research 17:528-537 PubMed39959245
2025
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Stem cell research & therapy 15:375 PubMed39443975
2024
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Translational stroke research 16:914-924 PubMed38977637
2024
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Product promise
Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.
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