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Doctor insights on: Does Blood Test Show Thyroid Problems

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Taking B12 shots once a week. Makes me sick.Blood test didn't show thyroid problems.Gained 60lbs in a year.Didn't change diet or exercise. No energy.

Taking B12 shots once a week. Makes me sick.Blood test didn't show thyroid problems.Gained 60lbs in a year.Didn't change diet or exercise. No energy.

Why then?: If the B12 shot is making you sick and has done nothing for me, why keep on getting them? You really need to see an internist soon to find out why you are gaining weight and feeling tired. For example, this may be a sign of underlying depression. ...Read more

Dr. Terri Washington
448 doctors shared insights

Thyroid Diseases (Definition)

You can have problems with they thyroid making too much or too little thyroid hormone. You can also have problems with it being too large (goiter) of having nodules or cysts in it. There are also occasional thyroid cancers. Most thyroid problems can be easily diagnosed and treated ...Read more


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Can you still have thyroid problems that the basic TSH blood test doesn't show? Is the full TSH blood panel better?

Can you still have thyroid problems that the  basic TSH blood test doesn't show? Is the full TSH blood panel better?

TSH and freeT4: Tsh and free T4 should be able to diagnose most thyroid problems, at least those related to function. Other tests are needed or helpful for other thyroid disorders, such as thyroiditis, cancer, etc. ...Read more

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Does a routine blood test check for thyroid problems?

Routine?: These days, there's no such thing as routine blood tests. Drs used to perform "wellness panels" at the time of a checkup. But now we have to tailor tests to the individual & only perform what is necessary, beneficial, & cost-effective. So, if you recently saw your dr & had "routine" labs done, there is a chance that your thyroid was not tested. We only check the level when symptoms warrant concern. ...Read more

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Can having thyroid problems affect birth control if you had to take meds? and how serious is it?I'm still waiting for blood test results at the moment

Can having thyroid problems affect birth control if you had to take meds? and how serious is it?I'm still waiting for blood test results at the moment

Still work: Birth control pills still work for those on thyroid medicines. Irregular periods is a symptom of thyroid disease but it does not interfere with the effectiveness of birth control pills. Hope this helps. ...Read more

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Can hyper thyroidism or thyroid meds cause a high bac reading in a blood test?

Unclear question: What is a "bac reading"? It may help if you spell out your concern. ...Read more

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Might a thyroid blood test show hormonal problems?

Possibly: Thyroid produces a hormone so depending on what you are looking for thyroid blood test can show if there is a thyroid hormone problem but other hormones require other tests. ...Read more

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Can a person have a thyroid problem and not show on a blood test?

Can a person have a thyroid problem and not show on a blood test?

Yes: Patients can have normal function of the thyroid which is measured by blood test but have an enlarged thyroid or thyroid nodules which are seen with imaging on ultrasound. ...Read more

Dr. Jan Lei Iwata
13 doctors shared insights

Thyroid (Definition)

The thyroid is an endocrine gland that sits in the lower part of the neck. It produces thyroid hormone - which ...Read more