beta-hCG vs hCG

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HCG = alpha plus beta subunits.

only the beta is unique to HCG

but the alpha is shared by TSH, FSH, LH and HCG. I've never thought about the difference I thought they were synonymous. There's a good explanation on wiki.
 
HCG = alpha plus beta subunits.

only the beta is unique to HCG

but the alpha is shared by TSH, FSH, LH and HCG. I've never thought about the difference I thought they were synonymous. There's a good explanation on wiki.

Thanks! but I guess I meant more about how they are measured differently clinically. FA errata changed the increased B-hCG levels during pregnancy to just hCG, saying that B-hCG is not increased. They didn't change anything with the choriocarcinoma (inc hCG) and hydatidiform mole (inc b-hCG).... so it got me thinking why the difference?
 
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