| http://www.w3.org/ns/prov#value | - For example, when the sample is a blood sample, the known volume can be less than 40 ??l, less than 30 ??l, less than 20, less than 10 ??l, or less than 5 ??l for genetic testing, while samples of plasma or CSF for viral load testing may be greater than 200 ??l, such as 200 ??l to 10,000 ??l.
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