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4 votes

What blood tests are worth doing for a healthy 30-year-old male?

The best place to find this answer is the US Preventive Services Task Force. They are an "independent, volunteer panel of national experts in prevention and evidence-based medicine" who make ...
Zac's user avatar
  • 100
3 votes

How much more Toxic is Ammonia than Urea?

Probably the easiest way to compare them is to look at their material safety data sheets (MSDS). The MSDS for urea lists its LD50 as 8471 mg/kg, so it's not very toxic stuff. The US Occupational ...
Carey Gregory's user avatar
  • 9,913

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