ForHosting KIT · Developer Utilities

VTE risk in pregnancy calculator

VTE risk in pregnancy calculator: enter your values and see a clear result on this page. Free for individual checks; API from $0.002.

● BetaFree · in your browser

Run — free How it works & API

Use it from WebAPIEmailTelegramApp soon

How to use it

Enter your values in the form above. The tool checks them before calculating and shows the result on the same page.

Check your inputs

Use the labels and units shown next to each field. If something is missing or outside the allowed range, the page points to the field to fix.

Use it again or automate it

Use the browser tool for individual checks and the API when you need the same capability in an automated workflow.

What you can do with it

Get an answer now

Enter one set of values and see the result without building a spreadsheet or script.

Compare scenarios

Change one value at a time and rerun the calculation to understand what affects the result.

Automate repeated work

Use the API when the same calculation needs to run inside your product or workflow.

FAQ

What does this pregnancy VTE calculator return?

An integer antenatal score from BMI, age, and history flags, a low / intermediate / high band, a recommendation key, and a short anticoagulation sentence (routine care, consider LMWH from 28 weeks, or consider LMWH throughout pregnancy).

Which scoring rule do you use?

The teaching form of the RCOG Green-top antenatal point table: previous VTE 4, high-risk thrombophilia 3, medical comorbidity 3, BMI ≥40 → 2 else BMI ≥30 → 1, age >35 → 1, and one point each for family history, low-risk thrombophilia, parity ≥3, smoking, varicose veins, pre-eclampsia, multiple pregnancy, and IVF.

What happens if BMI is invalid?

The request fails with invalid_input. A missing, non-finite, zero, negative, or out-of-range BMI (outside 10–80 kg/m²) is rejected rather than being clamped into an obesity band.

How do I format the input?

Send bmi and age as finite numbers (for example 32 and 36) and any history flags as booleans. Omitted flags count as false. Aliases such as pre_pregnancy_bmi, maternal_age, prior_vte, and art are accepted.

What does it cost?

The browser tool is free and runs locally. API requests use prepaid KIT balance at $0.002 per successful item; invalid input is not charged.

For developers — API access

Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.

API endpoint

POSThttps://api.kit.forhosting.com/health/vte-risk-pregnancy

Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.

Call it from your stack

curl -X POST https://api.kit.forhosting.com/health/vte-risk-pregnancy \
  -H "Authorization: Bearer $KIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{"bmi":32,"age":36}'

const res = await fetch("https://api.kit.forhosting.com/health/vte-risk-pregnancy", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.KIT_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "bmi": 32,
    "age": 36
  })
});
const { task_id } = await res.json();

import os, requests

res = requests.post(
    "https://api.kit.forhosting.com/health/vte-risk-pregnancy",
    headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
    json={
    "bmi": 32,
    "age": 36
},
)
task_id = res.json()["task_id"]

<?php
$res = file_get_contents("https://api.kit.forhosting.com/health/vte-risk-pregnancy", false, stream_context_create([
  "http" => [
    "method"  => "POST",
    "header"  => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
    "content" => '{"bmi":32,"age":36}',
  ],
]));
$task = json_decode($res, true);

body := bytes.NewBufferString(`{"bmi":32,"age":36}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/health/vte-risk-pregnancy", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)

Example request

{
  "bmi": 32,
  "age": 36
}

Example response

{
  "task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
  "type": "health.vte_risk_pregnancy",
  "status": "queued",
  "_links": {
    "result": "/tasks/tsk_…/result"
  }
}

The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.

Pricing

Per request$0.002

Published price — no tokens, no invented credits. A failed task is never charged.

Errors

HTTP	Code	Meaning
`401`	`unauthorized`	Missing or invalid API key.
`402`	`insufficient_balance`	Your balance doesn't cover the task price.
`404`	`unknown_type`	That task type doesn't exist.
`429`	`rate_limited`	Too many requests. Use the webhook instead of polling.

Read the full KIT documentation →