Is low serotonin, ser on a blood test a good thing?

My daughters blood test result for "serotonin, ser" was very low, below normal range. The endocrinologist told her that lower is better. Was he correct? What does this mean? She suffers from gastrointestinal problems but does not have chrons or colitis, possibly IBS. She is also experiencing "hot flashes", sleeplesness, and anxiety. She is taking anti-depressants and warfarin for a clotting disorder. She is 32 years old.

I thought low blood serotonin levels contribute to depression, why is this doctor telling her that low serum serotonin is better?

[mammo]

From all I have read, low serotonin levels are not good.  Serotonin is responsible for how we feel and a lack of it can cause depression, fatigue, and other problems.  I think your daughter should seek a second opinion, the idea is to have a healthy level of serotonin... not high or low.  You're wise to question his thinking....he must be one of those med students who graduated at the bottom of his class but is still called doctor! Do seek another opinion, and best wishes to both of you.

[Mace1949]

thanks, will get a second opinion.

[freddie8605]

I didn't know there was a blood test for serotonin.