Hhmm.. the kit usd by GPs/gynae should be the same as off the shelf. Generally, test kit can only detect if HCG is 20 or 25 and above. I remembered my GP used the same test kit I bought at Mustaffa centre and it's only $1.90! If you want to be sure. take a blood test. Just go to any GP. no need go private gynae as they cost more. Btw, how many days have you missed your menses?