Compression Sock Tests

Winning customer confidence with verified protecting performances

Compression socks are a type of protection wear that enclose your foot and calf, as well as  the knee or up to the thigh. A good-quality compression sock not only protects your skin, it also helps enhance your blood circulation, helps guard against deep vein thrombosis (DVT), and reduces sports-related injuries. 

More people, especially sport lovers, nowadays see many benefits in compression socks, and don’t mind spending more on a good pair. The properties and performance of compression socks can be defined by the compression value in millimeters of mercury (mmHg) and the change in compression value according to girth. Derived from the pressure exerted by socks at the ankle and the relative pressures at the calf and thigh, the compression value must gradually decrease up the leg in order to improve good blood circulation.

Equipped with the most advanced equipment in high-performance textile testing, Intertek’s technical experts can help evaluate the different properties of your products, assuring your product quality will meet customer expectations. The tests are performed on the standard legs with a flat measuring probe, while pressure and pressure graduation can be tested at the same time. These tests have a good correlation with HOSY, HATRA, and CEN (ITFH) methods.


Test Scope: 

  • Compression socks for medical use
  • Compression socks for sports
  • Compression leggings for sports
  • All compression socks, including the Below-knee type, Mid-thigh type, Thigh type, Single-leg panty and Panty Hosiery

Measuring Points 

  • B: Ankle at the point of its minimum girth
  • B1: Point at which the Achilles tendon changes into the calf muscles
  • C: Calf at its maximum girth
  • D: Just below the tibial tuberosity
  • E: Center of the patella and over the back of the knee
  • F: Between K and E
  • G: 5 cm below K with the patient in the upright position



  • Compression at each measuring point, expressed in mmHg (or hPa)
  • Residual pressure at each measuring positions (other than B), expressed as a percentage of the compression at the ankle, the compression at the ankle being 100%

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