23 places offer this. 23 list prices; for the rest, call and ask before you go.
Heartworm test: $12 to $58 at the 18 places that publish a price, typically $45.
Lowest to highest, from each place's own price list. Packages and add-ons are left out. Prices change, so confirm when you call. Compare other cities.
Showing 10 of 23 places ·
County shelter · 4804 Fredericksburg Rd., San Antonio
Heartworm test from $34
Low-cost shots, heartworm tests and flea and heartworm meds, Monday to Friday, 10am to 2pm, by appointment. Rabies shot is $17. You pay a $16.50 deposit when you book. They don't treat sick pets.
Checked Nov 7, 2026 on the clinic's website
Low-cost private clinic · 2907 W Ave, San Antonio
Vet visit $45
Low-cost vet for check-ups, shots and common problems like itchy skin, urinary issues, heartworm and parvo. Exams are $45. Open Monday to Friday, 8am to 5pm, by appointment.
Checked Nov 7, 2026 on the clinic's website
Spay / neuter clinic · 210 Tuleta Dr, Bldg #3, San Antonio
Cat spay/neuter from $55
Low-cost spay and neuter for City of San Antonio pets, Tuesday to Friday. Cat spay $65, cat neuter $55, dogs from $85. Free surgery for pets in certain zip codes. Walk in for shots 10am to 2pm.
Checked Nov 7, 2026 on the clinic's website
Spay / neuter clinic · 8034 City Base Landing, San Antonio
Heartworm test $35
Low-cost spay and neuter by appointment, Monday to Thursday. Packages include a rabies shot and microchip: cat spay $115, cat neuter $104, dogs from $132. Takes dogs and cats 3 to 70 lbs. Ask about free or discounted surgery.
Checked Nov 7, 2026 on the clinic's website
Spay / neuter clinic · 6758 Ingram Rd, San Antonio
Cat spay/neuter from $85
Low-cost spay and neuter by appointment on the West Side. Cat spay $100, cat neuter $85; dogs $135 to $365 by weight, up to 120 lbs. Free surgery on select days for pets in qualifying zip codes. Feral cats walk in.
Checked Nov 7, 2026 on the clinic's website
Spay / neuter clinic · 4922 S Zarzamora St, San Antonio
Heartworm test $26
Spay and neuter clinic on the South Side. Cat spay $164, cat neuter $130; dog spay $197, dog neuter $164 up to 60 lbs. Also shots, dental cleanings and heartworm prevention. Book online.
Checked Nov 7, 2026 on the clinic's website
Spay / neuter clinic · 924 N. Main St, Boerne
Nonprofit spay and neuter clinic in Boerne, by appointment. Standard: cats $220 to $235, dogs $250 to $370, with shots and microchip. Households earning under $49,000 pay less: cats $102 to $105, dogs $120 to $240.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · Mobile / rotating sites
Heartworm test $29
Walk-up shot clinics every weekend at stores around San Antonio. Rabies shots are $10 and there is no exam fee. No appointment needed.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · Mobile / rotating sites
Heartworm test $42
Weekend shot clinics at stores and shelters across San Antonio, Schertz, Converse and Seguin. Walk up or book online to skip the line. No office visit fee.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · Mobile / rotating sites
Vet visit $45
Low-cost shot clinic on select weekends at Ladybug Grooming (Potranco Rd) and Woodlawn Pointe Community Center. Dog packages from $58, cat packages from $50. Not open every weekend.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · Mobile / rotating sites
Heartworm test $35
Walk-in shot clinics on weekends at Pets Plus (Babcock Rd), Moore's Feed (S Flores) and De Zavala Rd. Rabies $25. First come, first served.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · Mobile / rotating sites
Heartworm test from $13
Evening and weekend shot clinics in H-E-B and pet store parking lots across San Antonio, Schertz, Universal City and New Braunfels. Rabies $22. Walk up. Cards only.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 924 N Main St, Boerne
Heartworm test from $12
Nonprofit shot and wellness clinic in Boerne, by appointment Monday to Thursday. Rabies $10, office visit $20. Lower prices for families earning under $49,000.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 3143 SE Military Dr, San Antonio
Heartworm test $51
Vaccine clinic inside the 3143 SE Military Dr Petco. By appointment only. Rabies $37, microchip $34, no exam fee.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 11398 Bandera Rd, San Antonio
Heartworm test $51
Vaccine clinic inside the 11398 Bandera Rd Petco. By appointment only. Rabies $37, microchip $34, no exam fee.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 23014 US Hwy 281 N, San Antonio
Heartworm test $51
Vaccine clinic inside the 23014 US Hwy 281 N Petco. By appointment only. Rabies $37, microchip $34, no exam fee.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 6206 Woodglen Dr, San Antonio
Heartworm test $51
Vaccine clinic inside the 6206 Woodglen Dr Petco. By appointment only. Rabies $37, microchip $34, no exam fee.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 1211 Austin Hwy, San Antonio
Heartworm test $51
Vaccine clinic inside the 1211 Austin Hwy Petco. By appointment only. Rabies $37, microchip $34, no exam fee.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 840 Loop 337, New Braunfels
Heartworm test $46
Walk-in shot clinic at Tractor Supply on Tuesday evenings, 5pm to 7pm. Rabies $38, dog packages from $84.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 1530 S Main St, Boerne
Heartworm test $46
Walk-in shot clinic at Tractor Supply every other Saturday, 1pm to 2:30pm. Rabies $38, dog packages from $84.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 11946 Leslie Rd, Helotes
Heartworm test $46
Walk-in shot clinic at Tractor Supply every other Saturday, 4pm to 5:30pm. Rabies $38, dog packages from $84.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 1500 E Court St, Seguin
Heartworm test $44
Walk-in shot clinic at Tractor Supply on Sundays, 1pm to 2:30pm. Rabies $36, dog packages from $79.
Checked Nov 7, 2026 on the clinic's website
Vaccine clinic · 22103 Bulverde Rd, San Antonio
Heartworm test $46
Walk-in shot clinic at Pet Supplies Plus about once a month on a Sunday afternoon. Rabies $38, dog packages from $84.
Checked Nov 7, 2026 on the clinic's website
Each place shows the date we last checked it on its own website. How we check listings