Question 1

What can Previva do for me?

Accepted Answer

Previva keeps your health story and explains it to you. You upload your lab tests, log home measurements or connect your watch. With that it tells you how you are today (Now), what changed since last time and where you are heading. It learns your personal range, writes to you first after every test, measures how many days you take to recover, calculates your biological age and, if needed, connects you with a doctor by video or sends a nurse to your home to take the sample.

Question 2

How is it different from ChatGPT?

Accepted Answer

ChatGPT does not know your story. Previva does: it keeps every test and every measurement with its date, compares each value with yourself (your personal range) rather than with everyone's average, and lets you know when something changes. It also writes to you first after every test and can take you to a real doctor.

Question 3

What is my personal range?

Accepted Answer

It is your usual range for each marker, calculated from your own tests (at least 3 stable measurements are needed). A lab compares you with the population average; your personal range compares you with yourself. That way a change of yours shows up even when the value is still «within range».

Question 4

How does «How you recover» work?

Accepted Answer

When something happens (you get sick, train hard, travel, sleep badly), Previva looks at your resting heart rate, your sleep and your measurements before and after, and counts how many days you take to get back to your usual level. Over time it learns what is typical for you: «after a cold, your heart rate usually returns in 8 days».

Question 5

Can I order lab tests without leaving home?

Accepted Answer

Yes, in Mexico City and other cities. You pick the panels, enter your address and the day, pay by card, OXXO or SPEI, and a nurse from the partner lab comes to your home. Results arrive in your account on their own, already explained. With Plus and Premium the visit is free.

Question 6

How much does it cost?

Accepted Answer

You start free and without a card: 4 AI test readings every 30 days, 15 chat messages a day and your story stored forever. Plus (199 MXN a month) gives you unlimited readings and chat, Where you are heading and your range with numbers. Premium (399 MXN a month) adds How you recover in full, unlimited hypotheses and 20% off video consultations.

Question 7

Is my data safe?

Accepted Answer

Your data is yours. We ask for permission before using AI, we never sell it or use it for advertising, the chat has an incognito mode and you can delete your account from the app. We follow the Mexican data protection law (LFPDPPP).

Question 8

Does it replace a doctor?

Accepted Answer

No. Previva helps you understand your tests, see what changed and arrive better prepared to your appointment. It does not give diagnoses. When something needs a doctor, it says so and helps you book a video consultation with verified independent doctors.

Question 9

How does AI analysis work?

Accepted Answer

You upload a PDF or photo of your test and our AI extracts each biomarker, categorizes it, compares it to optimal ranges and generates a clear summary in under 2 minutes. Then you can ask Previva Chat anything about your results.

Question 10

Does Previva replace a doctor?

Accepted Answer

No. Previva does not replace a doctor — it's your assistant between visits. The AI helps you understand your tests, detect early signals and prepare for appointments. When something matters, we connect you with certified doctors.

Question 11

Is my data secure?

Accepted Answer

Yes. All information is encrypted at rest and in transit, stored on ISO 27001 certified servers, and we never share your medical data with third parties. You can delete your account and all your data whenever you want.

Question 12

Can I cancel anytime?

Accepted Answer

Of course. You can cancel from the app in one click — no calls, no forms. If you cancel a yearly plan within the first 14 days, you get a full refund.

Question 13

Which labs do you accept?

Accepted Answer

Any lab. We accept results from Chopo, Salud Digna, Olab, Médica Sur, Quest, Carpermor and hundreds more — as long as the report has numeric values.