Doctor said that some sensitive home pregnancy tests can pick up a positive result with an hcg level of just 1mlu. possible? how?

Does it matter? : Most tests pick up a bhcg of about 20. I am not sure why this is useful information though. A bhcg coubles every 48 hours. Even in the rare cicumstance where someone checks a test so early it can not detect it (say a level of 19) 48 hours later your level is high enough for detection. Home pregnancy tests are very simple and very accurate.