How many valves are in the saphenous vein?
Valve counts sound like trivia, but this one is a useful example of how to read a published range.
The typical valve count
A range, not a single number. Cleveland Clinic says most people have anywhere from 10 to 12 valves in their great saphenous vein. It adds that the number of valves varies from person to person.
What the valves do
Cleveland Clinic says your saphenous veins each contain several one-way valves that help your blood flow in the correct direction and prevent it from flowing the wrong way.
Note that "most people" and "varies" belong together. The range describes a typical vein, and yours may sit outside it.
The question that makes a quote firm
The source does not tie valve count to any treatment or cost, so do not read a price into it. Ask the clinic which vein the plan targets and what the quoted figure includes, such as the exam and follow-up.
To see how the anatomy relates to treatment, read an overview of endovenous varicose vein treatment and a description of where the saphenous vein runs and what it does. A Des Plaines clinic can map both onto your own leg.
What an anatomy figure cannot tell you
An average count is a fact about veins in general. It cannot tell you how many working valves you have, and a quote is not built from it.