• Temperature sensitivity: feeling unusually cold or experiencing cold extremities.
• Digestive changes: constipation or slower bowel movements.
• Cognitive shifts: reduced memory, mental fog or difficulty concentrating.
• Mood changes: low mood, anxiety or irritability.
• Menstrual changes: PMS or dysmenorrhoea.
• Energy concerns: persistent fatigue or reduced stamina.
• Weight gain: difficulty losing weight or unexplained increases.
• Skin and hair: dry skin or poor skin quality.
• Water retention: puffiness or swelling in limbs.
• Muscle or joint discomfort: aches or stiffness without clear cause.
• Libido changes: reduced sex drive.
• Headaches: recurring tension or low-grade headaches in the context of thyroid patterns.

Overview

Thyroid Plus assesses several aspects of thyroid physiology using a serum sample. It includes markers of central thyroid regulation (TSH), peripheral hormone levels (free T4, free T3, total T4 and reverse T3) and thyroid autoimmunity (anti-TPO and anti-TG antibodies). Together, these measurements provide an overview of thyroid production, conversion and immune-related activity.

Practitioners may consider this test when clients report concerns that may relate to thyroid patterns, such as fatigue, changes in weight, low mood, menstrual shifts, temperature sensitivity or fluid retention. Reviewing both regulatory markers and free hormone levels can help clarify whether observed patterns may be linked with central signalling, peripheral conversion dynamics or immune influences.

Results are typically interpreted alongside symptom history, iodine and selenium intake, stress exposure, medication use and lifestyle factors. This integrated perspective supports practitioners in exploring how thyroid-related markers may connect with energy, mood, metabolic balance and overall comfort for clients.

Practical

Specimen

Serum

Container

• White capped SST transfer tube

Patient preparation

• The following medications may impact this test: - Glucocorticoids (e.g., prednisone), dopamine, lithium, interferon-alpha, phenobarbital, phenytoin, heparin, clofibrate, carbamazepine and colestipol.

Please note that this is a serum sample and requires a full blood draw