The beta HCG levels in your blood are calculated in milli-international units per milliliter (mIU/ml).
If the level of the HCG hormone is less than 5 mIU/ml, the result is considered negative.
Some other reasons for lower than expected HCG levels in your blood include:
- Potential miscarriage
- Ectopic pregnancy
- Misinterpreted gestational age
To confirm pregnancy, the hormone level must be higher than 25 mIU/ml. However, the other reasons behind the increase of the hormone in your blood are:
- Molar pregnancy
- Multiple pregnancies
In case of abnormal B-HCG results, the doctor prescribes repeated testing to diagnose the associated problems.