Single Most Likely Diagnosis
- Not Pregnant: This is the most likely diagnosis, as a negative HCG urine test and negative home pregnancy tests are strong indicators that the individual is not pregnant.
Other Likely Diagnoses
- Early Pregnancy: It's possible that the pregnancy is too early to detect, and HCG levels may not be high enough to trigger a positive test result.
- Ectopic Pregnancy: Although less common, an ectopic pregnancy may not produce enough HCG to result in a positive test.
- Miscarriage: A recent miscarriage may cause HCG levels to drop, resulting in a negative test.
Do Not Miss Diagnoses
- Molar Pregnancy: A rare condition where a non-viable fertilized egg implants in the uterus, producing high levels of HCG, but may not always result in a positive test.
- Ovarian Tumor: Some ovarian tumors can produce HCG, but may not be detected by standard pregnancy tests.
- Pituitary HCG Production: In rare cases, the pituitary gland can produce HCG, leading to false-negative pregnancy test results.
Rare Diagnoses
- HCG Variant: Some individuals may produce a variant of HCG that is not detected by standard pregnancy tests.
- Laboratory Error: Although rare, laboratory errors can occur, resulting in false-negative test results.
- Medication Interference: Certain medications, such as those used in fertility treatments, can interfere with HCG test results.