Sammiejane - that's a low oestrogen reading. Although tests are not an absolute indication of levels, they are an indicator of low, medium and high levels, and yours is low. FYI, gp's always say satisfactory if it's within their range - this doesn't mean it's satisfactory for you. My go told me a reading of under 50 was satisfactory as it was within post meno range. My levels plummeted on Oestrogel and I'm pretty sure that's what caused hair thinning.
If you have your other test results, it might be worth posting them and other ladies who have expertise on readings can comment, I know there's some on here.
If I were you, I'd keep going with patch for a few months, get tested again and if oestrogen levels have increased you can consider adding other hormones. You're in, some would say, the enviable position of not having to take prog so hold off until you've got your E levels up. With levels as low as yours, I'd imagine that's what's causing the hair loss. There are no patches indicated for hair growth, it's just a matter of finding one you absorb well and makes you feel well.