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TSH

TSH stands for thyroid stimulating hormone. Another name for it is thyrotropin. A TSH test is a blood test that measures this hormone. A TSH level that is too high or too low may be a sign of a thyroid problem.

A TSH test is used to find out how well your thyroid is working. It can tell if you have hyperthyroidism (too much thyroid hormone) or hypothyroidism (too little thyroid hormone) in your blood. But a TSH test can't show what is causing a thyroid problem.

Source: MedlinePlus, U.S. National Library of Medicine

Normal range

28 published ranges, each from a named source
20 y+
0.27–4.2 mU/L
20 y+
0.3–4.2 mIU/L
Female · 20 y+
0.27–4.2 mU/L
Male · 20 y+
0.27–4.2 mU/L
Ranges from ARUP Laboratories Test Directory, Mayo Clinic Laboratories (Pediatric Test Catalog).

All source ranges (28)
SourceSexAgeRange
ARUP Laboratories Test Directory All ≤ 3 d 5.17–14.6 mU/L
ARUP Laboratories Test Directory All 4 d – 30 d 0.43–16.1 mU/L
ARUP Laboratories Test Directory All 30 d – 2 y 0.62–8.05 mU/L
ARUP Laboratories Test Directory All 2 y – 6 y 0.54–4.53 mU/L
ARUP Laboratories Test Directory All 7 y – 11 y 0.66–4.14 mU/L
ARUP Laboratories Test Directory All 12 y – 19 y 0.53–3.59 mU/L
ARUP Laboratories Test Directory All 20 y+ 0.27–4.2 mU/L
ARUP Laboratories Test Directory Female ≤ 3 d 5.17–14.6 mU/L
ARUP Laboratories Test Directory Female 4 d – 30 d 0.43–16.1 mU/L
ARUP Laboratories Test Directory Female 30 d – 2 y 0.62–8.05 mU/L
ARUP Laboratories Test Directory Female 2 y – 6 y 0.54–4.53 mU/L
ARUP Laboratories Test Directory Female 7 y – 11 y 0.66–4.14 mU/L
ARUP Laboratories Test Directory Female 12 y – 19 y 0.53–3.59 mU/L
ARUP Laboratories Test Directory Female 20 y+ 0.27–4.2 mU/L
ARUP Laboratories Test Directory Male ≤ 3 d 5.17–14.6 mU/L
ARUP Laboratories Test Directory Male 4 d – 30 d 0.43–16.1 mU/L
ARUP Laboratories Test Directory Male 30 d – 2 y 0.62–8.05 mU/L
ARUP Laboratories Test Directory Male 2 y – 6 y 0.54–4.53 mU/L
ARUP Laboratories Test Directory Male 7 y – 11 y 0.66–4.14 mU/L
ARUP Laboratories Test Directory Male 12 y – 19 y 0.53–3.59 mU/L
ARUP Laboratories Test Directory Male 20 y+ 0.27–4.2 mU/L
Mayo Clinic Laboratories (Pediatric Test Catalog) All ≤ 5 d 0.7–15.2 mIU/L
Mayo Clinic Laboratories (Pediatric Test Catalog) All 6 d – 2 mo 0.7–11 mIU/L
Mayo Clinic Laboratories (Pediatric Test Catalog) All 3 mo – 11 mo 0.7–8.4 mIU/L
Mayo Clinic Laboratories (Pediatric Test Catalog) All 1 y – 5 y 0.7–6 mIU/L
Mayo Clinic Laboratories (Pediatric Test Catalog) All 6 y – 10 y 0.6–4.8 mIU/L
Mayo Clinic Laboratories (Pediatric Test Catalog) All 11 y – 19 y 0.5–4.3 mIU/L
Mayo Clinic Laboratories (Pediatric Test Catalog) All 20 y+ 0.3–4.2 mIU/L

What an abnormal result can be associated with

A high result
Elevated circulating thyroid-stimulating hormone concentration
A low result
Decreased thyroid-stimulating hormone level
Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis: only a clinician can interpret your result in context.
details
Sample
Serum or plasma · LOINC
Part of
Bryan Johnson Blueprint
Monitored for
Hypothyroidism
Listed under
Hyperthyroidism · Pituitary Tumors · Thyroid Cancer · Thyroid Diseases
Code
LOINC 3016-3 · mU/L
Also known as
Thyrotropin, TSH
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