Cold Stimulation Test Test
A cold stimulation test checks how quickly your fingers warm up after being placed in ice water. It helps diagnose Raynaud phenomenon, a condition where blood vessels narrow too much in response to cold or stress.
What this test measures
The test measures how long it takes for your finger temperature to return to normal after being placed in ice water.
What your results mean
Reference ranges vary by laboratory and by your age and sex. MedlinePlus does not publish a single normal range for this test — always read your result against the range printed on your own lab report and discuss it with your provider.
Frequently asked questions
What is a cold stimulation test?
A cold stimulation test involves placing your fingers in ice water and checking how long it takes your skin to return to a normal temperature.
What does the cold stimulation test diagnose?
The test is used to find out if you have Raynaud phenomenon.
How long does it take for finger temperature to return to normal if you have Raynaud phenomenon?
If it takes 20 minutes or more for your finger temperature to return to normal after the ice water bath, it probably means you have Raynaud phenomenon.
What is the difference between primary and secondary Raynaud phenomenon?
Primary Raynaud phenomenon has no known cause and is often milder. Secondary Raynaud phenomenon is usually caused by another health condition, such as lupus or scleroderma, and can be more serious.
What other tests might be done if secondary Raynaud phenomenon is suspected?
Your provider may order a nailfold capillaroscopy or blood tests such as antinuclear antibody (ANA), erythrocyte sedimentation rate (ESR), and C-reactive protein.
Related lab tests
Sources
- MedlinePlus: Cold Stimulation Test — NIH MedlinePlus
Last updated . Information is aggregated from official public sources and is not a substitute for professional medical care.