A high TSH often points to an underactive thyroid, while a low TSH often points to an overactive thyroid or too much thyroid hormone exposure. Here’s how to read TSH with free T4, T3, symptoms, medications, pregnancy, and follow-up testing.
A high lipoprotein(a), or Lp(a), result can signal inherited cardiovascular risk even when standard cholesterol numbers look normal. A low result is usually reassuring, but it does not cancel out other heart-risk factors.
A fasting insulin result is most useful when read with glucose, A1C, symptoms, medications, and sometimes C-peptide. High insulin often points toward insulin resistance or excess insulin during low blood sugar; low insulin with high glucose can suggest reduced pancreatic insulin production.
