CheKine™ Micro Free Cholesterol Assay Kit: Your Buyer's Guide for Accurate FC Quantification

The 30-Second Verdict

Free cholesterol (FC)—the unesterified form that regulates membrane fluidity, signaling, and steroidogenesis—is a critical biomarker in cardiovascular research, neurodegeneration, and cancer biology. Abbkine's CheKine™ Micro Free Cholesterol (FC) Assay Kit (KTB2210) delivers a rapid, sensitive, and microplate-based solution for FC quantification across diverse sample types.

Pros

✅ High specificity — enzymatic method specifically detects free cholesterol, not cholesterol esters

✅ Micro-scale format — requires only 5–10 µL of sample per assay

✅ Broad sample compatibility — serum, plasma, tissue homogenates, cell lysates

✅ Simple workflow — single-step, no organic extraction required

✅ Colorimetric readout — compatible with standard microplate readers

✅ High-throughput — 96-well format enables simultaneous analysis of multiple samples

✅ Cost-effective — competitive pricing for routine FC screening

Cons

❌ Requires microplate reader with appropriate absorbance capability

❌ Not for clinical diagnosis (research use only)

❌ Cannot distinguish between free and esterified cholesterol without separate total cholesterol measurement

Who Should Buy This Kit?

Ideal for:

• Cardiovascular researchers studying atherosclerosis and lipid metabolism
• Neurobiologists investigating cholesterol dysregulation in Alzheimer's disease
• Cancer researchers exploring membrane lipid signaling in tumor progression
• Metabolic syndrome and NAFLD researchers
• Drug discovery teams screening cholesterol-modulating compounds
• Labs working with limited or precious samples (biopsies, primary cells)

Skip this if:

• You lack a microplate reader
• You need total cholesterol measurement only (use KTB2220 instead)

How It Works

The kit employs a highly specific enzymatic reaction: cholesterol oxidase catalyzes the oxidation of free cholesterol to cholestenone, generating hydrogen peroxide. The peroxide then reacts with a chromogenic probe in the presence of horseradish peroxidase (HRP) to produce a colored product. The absorbance is directly proportional to free cholesterol concentration.

Why Free Cholesterol Matters

Unlike total cholesterol (which includes both free and esterified forms), free cholesterol reflects the biologically active pool—the form that integrates into membranes, modulates signaling, and participates in steroidogenesis. Dysregulated FC levels are implicated in:

• Atherosclerosis — FC accumulation in macrophage foam cells drives plaque formation
• Alzheimer's Disease — FC promotes amyloid-β aggregation and neuronal dysfunction
• Cancer — FC modulates membrane raft signaling and tumor progression
• NAFLD — FC accumulation in hepatocytes triggers lipotoxicity and inflammation

The Bottom Line

For researchers who need to distinguish free cholesterol from total cholesterol without the expense of HPLC or mass spectrometry, KTB2210 delivers the specificity, sensitivity, and simplicity that modern lipid research demands.

👉 Quantify free cholesterol with confidence. View Product