Test/Investigation
Thyroid stimulating hormone (TSH)
Site(s) or Laboratory offering Test/Investigation
NNUH, QEH, JPUH
Units
mIU/L
Comments/Precautions
Raised in hypothyroidism. Please contact the lab if you suspect assay interference
Sample type
Serum
Turnaround times (TAT) Urgent/Routine/GP or OPD
1 hour / 4 hour / by 8am next day
Reference intervals (adult unless stated)
Adult range (> 19 yr) 0.35 – 4.94 mIU/L
Paediatric ranges:
4 days – < 6 mnth 0.73 – 4.77 mIU/L
6 mnth – < 14 yr 0.7 – 4.17 mIU/L
14 yr – < 19 yr 0.47 – 3.41 mIU/L
If UKAS Accredited Test indicate at which site
Y NNUH, QEH
Source
Adult ranges: Abbott Alinity kit insert [G71292R02] Paediatric ranges: CALIPER (Adeli, K., Higgins, V., Trajcevski, K., White-Al Habeeb, N. (2017). The Canadian laboratory initiative on pediatric reference intervals: A CALIPER white paper. Crit Rev Clin Lab Sci, 54(6):358-413. doi: 10.1080/10408363.2017.1379945. Epub 2017 Oct 11. Erratum in: Crit Rev Clin Lab Sci. 2020 Mar;57(2):145. PMID: 29017389.)