Could Fatigue, Muscle Pain And Depression Be Symptoms Of Hypothyroid?

TSH Testing is it conclusive? I know my son has a hypo thyroid and I have many of the symptoms. Fatigue after sleeping, mussel pain (big time) tendon ides, inability to lose weight, some mild depression, dry skin, eczema, poor concentration and memory, hoarse voice, pain in hands and snoring. TSH .87