Hi, the result means hypothyroidism. Low level of T3 and T4 means the thyroid is producing less than enough hormones. TSH is the one to stimulate the production of T3 and T4. When your T3 and T4 is low, the body produces more TSH so as to stimulate the body to produce more T3 and T4. So a normally higher level TSH and low T3 and T4 are consistent.