Hcg test so soon??

Kortnie • Tatum Silas! ❤️ MC Aug 1st. 👼 TTC our 🌈🌈 Crunchy Mama! (Cloth diapers, breastfeeding, baby wearing)
How is everyone getting there hcg tests done so early? I'm a first time mom. My ob gyn, is out of town this week, so my first visit is Tuesday, the 6th.