my longstanding argument against theranos, by the way (like, since 2005), was "look. if i go down to the beach with a bucket and take a bucket of water and put it in my super accurate shark detector van, it doesn't mean the beach is safe to swim at!"
Unless you dilute the water until it becomes homeopathic anti-shark water.
To be fair at some level that's an argument against blood testing in general.
not really. it's just an admission that sampling frequency matters.