I've been taking finasteride for 4 months, I am female

I would definitely discuss this concern with your doctor. There are many possible things that can cause the abnormalities of the blood tests that you describe. I strongly recommend that you get evaluated to discuss these concerns.

This needs an in-person evaluation. I suggest seeing a hair loss expert now to evaluate and go over your test results and provide you information about your best treatment options. There are great non-invasive options like prp/progesterone and/or hair transplantation. See an expert. Best, Dr. Emer

I would suggest sitting down with your physician to review this in detail. Most likely you will compared blood test results from the months and years prior to starting finasteride. If the hemoglobin was high then and liver enzymes were elevated in the past ...it makes a direct finasteride contribution less likely. There are thousands of things that can elevate liver enzymes. Thousands. I don't have the full story so I can't say whether there is any role for finasteride in your case. Is it possible? Sure, but it's quite rare.  Your doctor will review your blood tests and previous ones as well to determine what tests to order next. If the liver enzymes are very high, generally a person needs urgent medical attention. See your physician to discuss. As for hemoglobin, the clinical studies in men using finasteride did not show changes in hemoglobin levels. In fact, androgens generally raise hemoglobin levels and anti-androgens generally lower hemoglobin levels.  All in all, your question is a good one but  can't be properly answered without all the facts present. Finasteride is not FDA approved for use in women so any such use is "off-label".