You usually need more than a few drops of blood, saliva or urine to detect illnesses. Here’s why

By Amali Cooray, PhD Candidate in Genetic Engineering and Cancer, WEHI (Walter and Eliza Hall Institute of Medical Research)
John (Eddie) La Marca, Senior Research Officer, Blood Cells and Blood Cancer, WEHI (Walter and Eliza Hall Institute of Medical Research)
Sarah Diepstraten, Senior Research Officer, Blood Cells and Blood Cancer Division, WEHI (Walter and Eliza Hall Institute of Medical Research)

Biotech startup Haemanthus says it can detect illnesses with tiny amounts of blood, urine and saliva. Here’s why that’s more difficult than it sounds.

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