Test strip Stick c-GMP

Overview
The Stick c-GMP kits consist of immunochromatographic test strips in formats adapted for on-site screening of added whey in milk and powdered milk. They detect Casein‑GlycoMacroPeptide (cGMP), a peptide released from casein during cheese manufacture and present at high levels in whey; non‑adulterated milk contains only trace amounts.


Test principle
The test uses a specific antigen–antibody immunochromatographic reaction targeting cGMP. A brief sample pre‑treatment is required before applying the sample to the strip.


Performance and features

Specific antigen–antibody principle for reliable identification of cGMP

High sensitivity: capable of detecting 1% or 2% whey in properly stored fresh milk (sensitivity may be ~4% in suboptimally stored samples)

Sensitivity adjustable by changing sample dilution

Rapid: results in approximately 5 minutes after quick pre‑treatment

Applicable to fresh milk and powdered milk matrices

Strips storable at room temperature (2–30C)

Visual reading by eye; no instrument required

Easy visual interpretation with coloured lines (Control: blue — Positive: red)

Available kit formats: 5 individually sealed strips; 50 strips in a tube; 50 individually sealed strips

Application
Screening for added cow whey (adulteration) in milk and powdered milk via detection of Casein‑GlycoMacroPeptide (cGMP). Recommended for dairy quality control, incoming raw milk inspection and fraud screening.


Kit formats

5 individually sealed strips

50 strips in a tube

50 individually sealed strips

Technical specifications

Format: immunochromatographic test strips

Analyte: Casein‑GlycoMacroPeptide (cGMP)

Sensitivity: 1% or 2% whey in fresh milk (≈4% for suboptimal storage)

Adjustable sensitivity via dilution

Time to result: ~5 minutes (after pre‑treatment)

Sample types: fresh milk and powdered milk

Storage: room temperature 2–30C

Result reading: visual (no instrument)

Interpretation colours: Control blue, Positive red

Packaging options: individual sealed strips or bulk tube