Flowflex Plus RSV + Flu A/B + COVID 4-in-1 Home Test
Bulk pricing is available for orders of 8 units or more. Please call our pharmacist at (408) 622-8068 to discuss your discount.
- Complimentary shipping on all US orders over $100. For international inquiries, kindly email us at [info@khangpharmacy.com] with your shipping address and our team will provide you with a personalized shipping quote.
- In stock, ready to ship
- Backordered, shipping soon
The Flowflex® Plus RSV + Flu A/B + COVID 4-in-1 Home Test is the first FDA-cleared home test that simultaneously detects four major respiratory viruses from a single nasal swab — and the only one cleared for use in children as young as 6 months when administered by an adult using ACON's proprietary nasal swab guard.
- Detects: RSV, Influenza A, Influenza B, and COVID-19
- FDA-cleared over-the-counter rapid antigen test
- Ages 6 months and up — America's first 4-in-1 home test cleared for infants
- Fast results from a simple nasal swab at home
- Helps families decide whether to seek medical care, isolate, or take precautions
- HSA/FSA eligible
- Manufactured by ACON Laboratories — America's #1 home test brand*
Why it matters: RSV is the leading cause of hospitalization in young children (CDC). Flu, RSV, and COVID present nearly identical symptoms — fever, cough, congestion, wheezing — but require very different treatment decisions. This test gives families clarity sooner, in the comfort of home.
Pharmacist's Note: A positive Flu A or B result means you should contact your pharmacist or physician within 48 hours of symptom onset — antivirals like oseltamivir (Tamiflu) are most effective when started early. A positive COVID-19 result in high-risk patients (60+, immunocompromised, or with underlying conditions) should prompt an immediate conversation about Paxlovid eligibility. Questions? Call our pharmacist at (408) 622-8068.
📖 Pharmacist's Complete Guide
Want to learn more about how this test works, accuracy data, step-by-step instructions, and what to do after a positive result?
Read the Full Clinical Guide →*SOURCE: Circana Retail Sales Data (Units sold)
Shipping Policy
Last updated: April 2026
At KHANG Pharmacy, we are committed to delivering your health and wellness products safely and promptly. Please review our shipping policy below.
1. Processing Time
All orders are processed within 1–2 business days after payment confirmation. Orders placed on weekends or holidays will be processed on the next business day.
2. Shipping Methods & Delivery Times
- Standard Shipping: 5–7 business days
- Express Shipping: 2–3 business days
- Overnight Shipping: 1 business day (order must be placed before 12 PM PST)
3. Shipping Rates
- Free Standard Shipping on all orders over $100
- Standard Shipping: $10.00 for orders under $100
- Express Shipping: $25.00–$60.00
- Overnight Shipping: $80.00–$200.00
Final shipping rate is calculated at checkout based on order weight and destination.
4. Order Tracking
Once your order has shipped, you will receive a confirmation email with a tracking number. You can track your order through our website or the carrier's website.
5. Shipping Restrictions
We currently ship to all 50 US states. Some products may have shipping restrictions due to state regulations. If your order cannot be shipped to your location, we will notify you promptly and issue a full refund.
6. International Shipping
We are currently expanding our shipping capabilities to include Canada and select international destinations. Please check back for updates or contact us for more information.
7. Damaged or Lost Packages
If your package arrives damaged or is lost in transit, please contact us within 7 days of the expected delivery date at Info@khangpharmacy.com. We will work with the carrier to resolve the issue promptly.
8. Contact Us
For shipping inquiries, please contact us at Info@khangpharmacy.com.
Return Policy
Last updated: April 2026
At KHANG Pharmacy, your satisfaction is our priority. If you are not completely satisfied with your purchase, we're here to help.
1. Return Eligibility
We accept returns under the following conditions:
- Supplements and OTC products are non-returnable for safety reasons.
- If an error is made on our part, we accept returns for supplements and OTC products. Items must be unopened, unused, and in original packaging.
2. Non-Returnable Items
For health and safety reasons, the following items cannot be returned:
- Opened or used supplements and health products
- Perishable or temperature-sensitive items
- Items marked as final sale
- Gift cards
3. How to Initiate a Return
To start a return, please follow these steps:
- Email us at Info@khangpharmacy.com with your order number, phone number, and reason for return.
- Our team will respond within 2 business days with return instructions.
- Ship the item back using a trackable shipping method.
- Once received and inspected, we will process your refund within 5–7 business days.
4. Refunds
Approved refunds will be credited to your original payment method. Please note that original shipping charges are non-refundable unless the return is due to our error.
5. Exchanges
We offer exchanges for defective or damaged items. If you received a damaged product, please contact us within 48 hours of delivery with photos of the damage.
6. Defective or Incorrect Items
If you received a defective or incorrect item, we sincerely apologize. Please contact us immediately at Info@khangpharmacy.com and we will make it right at no additional cost to you.
7. Contact Us
For return inquiries, please contact us at Info@khangpharmacy.com.
