TSH

About Test

The TSH (Thyroid-Stimulating Hormone) test measures the level of TSH in the blood. TSH is produced by the pituitary gland and plays a crucial role in regulating thyroid function by stimulating the thyroid gland to produce thyroid hormones, such as thyroxine (T4) and triiodothyronine (T3).

This test is commonly used to evaluate thyroid function and diagnose thyroid disorders. Elevated TSH levels can indicate hypothyroidism (underactive thyroid), where the thyroid gland is not producing enough hormones. Conversely, low TSH levels may suggest hyperthyroidism (overactive thyroid), where the thyroid gland is producing excessive amounts of hormones.

The TSH test is often part of a broader thyroid function panel, which may include tests for T4 and T3, to provide a comprehensive assessment of thyroid health. Monitoring TSH levels helps healthcare providers diagnose thyroid disorders, guide treatment decisions, and manage thyroid function effectively to ensure overall health and well-being.

Sample Requirements

Gold SST Tube

Stability

Serum: 7 days 2-8°C

Turnaround Time

4 hours

Gold SST Tube

Assay Interferences

Interferences (Up to 5%)

Calcium: Above 15 mg/dL

Potassium: Above 7 mmol/L

Sodium: Above 180 mmol/L

Iron: Above 800 ug/dL

Zinc: Above 500 ug/dL

Magnesium: Above 4 mg/dL

Copper: Above 600 ug/dL

Bilirubin (conj): Above 15 mg/dL

Lipemia: Above 600 mg/dL

Haemolysis: Above 2 g/L

Reference Range (miU/L):

0.27 - 4.2

Critical Value:

Not applicable