CheKine™ Micro Amino Acid Assay Kit: The New Standard in Micromole-Scale Amino Acid Quantification
Amino Acids: From Building Blocks to Critical Biomarkers
Amino acids are far more than the building blocks of proteins—they are dynamic signaling molecules, metabolic intermediates, and powerful biomarkers of disease. The demand for amino acid quantification has surged alongside advances in single-cell omics, organoid models, and precision medicine[reference:0]. Yet, while sample sizes shrink to single-cell lysates and 1-day-old zebrafish embryos, most commercial kits still cling to designs optimized for bulk tissue analysis[reference:1]. This mismatch has created a critical bottleneck in micromole-scale amino acid quantification[reference:2].
Why Abbkine KTB1460 Leads the Field
| Feature | Abbkine KTB1460 | Traditional Amino Acid Assays |
|---|---|---|
| Detection Principle | Ninhydrin colorimetry (570 nm)[reference:3] | Variable; often HPLC or bulk assays |
| Detection Range | 0.078125–2.5 μmol/mL[reference:4] | Narrower range; less sensitive |
| Limit of Detection | 0.078125 μmol/mL[reference:5] | Often >0.5 μmol/mL |
| Sample Types | Serum, plasma, tissues, cells, urine, bacteria[reference:6] | Limited compatibility |
| Sample Volume | Microscale—minimal required | 50–100 µL or more |
| Storage | 12 months at 4°C, protected from light[reference:7] | Often shorter shelf life |
The Ninhydrin Reaction Advantage
The kit is designed for detecting total free amino acid content in a variety of biological samples. The principle is straightforward yet powerful: amino acids react with ninhydrin hydrate to produce blue-purple substances with a maximum absorption peak at 570 nm[reference:8]. The amino acid content of the sample is calculated by measuring the absorbance at 570 nm[reference:9].
Applications Across Research Fields
- Metabolic Research — tracking amino acid flux in health and disease
- Liver & Kidney Function — amino acids are mainly metabolized through the liver and kidney, so changes in urine amino acids reflect the physiological state of these organs[reference:10]
- Plant Science — studying nitrogen metabolism, absorption, transportation, and assimilation at different growth stages[reference:11]
- Nutritional Research — evaluating amino acid profiles in foods and supplements
- Single-Cell & Organoid Research — microscale format enables quantification from precious, limited samples
Critical Sample Handling Tips
- Do not mix or substitute reagents from other kit lots or vendors—this may cause abnormal results[reference:12]
- Avoid foaming or bubbles when mixing or reconstituting components[reference:13]
- Change pipette tips between additions to avoid cross-contamination[reference:14]
- Ensure all reagents and solutions are at the appropriate temperature before starting the assay[reference:15]
The Bottom Line
For researchers frustrated by amino acid assays that waste precious samples or deliver unreliable data, Abbkine's CheKine™ Micro Amino Acid Assay Kit (KTB1460) offers a targeted solution[reference:16]—combining microscale efficiency with the sensitivity and specificity that modern research demands.
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