Reference Ranges for Pregnancy Testing:
< 1 U/L Not consistent with pregnancy
1—25 U/L Equivocal — retest in 24 hours
> 25 U/L Consistent with pregnancy
(Higher levels up to 14 U/L have been reported in non-pregnant women > 40 yrs; see Clin Biochem. 2017 Mar;50(4-5):234-237).
Method used is Abbott Alinity (CMIA).
Abbott does not recommend use of the Alinity Total β-hCG assay as a tumour marker. Further information on the performance of different assays for this indication in (Ferraro S, Trevisiol C, Gion M, Panteghini M. Human Chorionic Gonadotropin Assays for Testicular Tumors: Closing the Gap Between Clinical and Laboratory Practice. Clin Chem. 2017 Oct 11. pii: clinchem.2017.275263. doi: 10.1373/clinchem.2017.275263. [Epub ahead of print] Review.)