You had 4 positive hpts then went to the doctor and a blood test done your hcg level was 14 Now im getting negative hpt results Any ideas why?

Possible explanations for negative hPT results after initial positive results and an elevated hCG level:

1. Early Pregnancy Loss: Early pregnancy loss, known as a chemical pregnancy, may cause fluctuations in hCG levels and lead to negative hPT results. This can occur before the ultrasound can detect a pregnancy sac.

2. Ectopic Pregnancy: An ectopic pregnancy is when the fertilized egg implants outside the uterus, commonly in the fallopian tubes. Ectopic pregnancies can result in rising hCG levels but negative hPT results as the hormone levels may not be in the urine.

3. HCG Variant Hook Effect: The "hook effect" occurs when excessively high hCG levels can interfere with the accuracy of some hPTs, leading to false negatives. This is more likely if your hCG levels are exceptionally high.

4. Medical Conditions: Certain medical conditions, including thyroid disorders and certain tumors, can affect hCG levels and potentially cause interference with hPTs.

5. Evaporated Line: If the hPTs show faint lines that later disappear or if you read the results after the recommended time frame, it may be due to an "evaporation line," which can mimic a positive result.

It's important to note that these are possible explanations, and the specific reason for your negative hPT results after initial positive tests and an elevated hCG level can only be determined by your doctor through further tests, including repeat blood tests and an ultrasound.