---
title: "Retrieve an allergy"
url: "https://docs.unified.to/healthcare/allergy/Retrieve_an_allergy"
description: "Retrieve an allergy with Unified's Allergy API (GET /healthcare/{connection_id}/allergy/{id}). Filter by fields and raw. Supported by 15 Allergy integrations."
---
# Retrieve an allergy

 GET/healthcare/{connection\_id}/allergy/{id}

## Parameters

**fields**string array 

id

created\_at

updated\_at

patient\_id

encounter\_id

practitioner\_id

name

codes

status

type

criticality

reactions

onset\_at

recorded\_at

notes

metadata

raw

Fields to return

**raw**string 

Raw parameters to include in the 3rd-party request. Encoded as a URL component. eg. raw parameters: foo=bar&zoo=bar -> raw=foo%3Dbar%26zoo%3Dbar

**connection\_id**string  required 

ID of the connection

**id**string  required 

ID of the Allergy

## Returns

[HealthcareAllergy](https://docs.unified.to/healthcare/allergy/model.md)

| Response field           | Type                                                                                                               | Required | Description                                                                         |
| ------------------------ | ------------------------------------------------------------------------------------------------------------------ | -------- | ----------------------------------------------------------------------------------- |
| id                       | string                                                                                                             | No       | Unique identifier for the allergy/intolerance                                       |
| created\_at              | string (date-time)                                                                                                 | No       | When the allergy record was created (ISO-8601 / YYYY-MM-DDTHH:MM:SSZ format)        |
| updated\_at              | string (date-time)                                                                                                 | No       | When the allergy record was last updated (ISO-8601 / YYYY-MM-DDTHH:MM:SSZ format)   |
| patient\_id              | string                                                                                                             | No       | The patient who has the allergy                                                     |
| encounter\_id            | string                                                                                                             | No       | The encounter in which the allergy was recorded                                     |
| practitioner\_id         | string                                                                                                             | No       | The practitioner who recorded or asserted the allergy                               |
| name                     | string                                                                                                             | No       | Human-readable name of the substance                                                |
| codes                    | [HealthcareCode](https://docs.unified.to/healthcare/allergy/Retrieve%5Fan%5Fallergy.md#HealthcareCode)\[\]         | No       | Codings for the substance (e.g. RxNorm, SNOMED CT)                                  |
| codes\[\].system         | string                                                                                                             | No       | The code system URI (e.g. http://loinc.org, http://snomed.info/sct)                 |
| codes\[\].code           | string                                                                                                             | No       | The code within the system                                                          |
| codes\[\].display        | string                                                                                                             | No       | Human-readable display text for the code                                            |
| status                   | enum                                                                                                               | No       | Clinical status of the allergy Values: ACTIVE, INACTIVE, RESOLVED, OTHER            |
| type                     | enum                                                                                                               | No       | Category of the substance Values: FOOD, MEDICATION, ENVIRONMENT, BIOLOGIC, OTHER    |
| criticality              | enum                                                                                                               | No       | Potential severity of future reactions Values: LOW, HIGH, UNABLE\_TO\_ASSESS, OTHER |
| reactions                | [HealthcareCode](https://docs.unified.to/healthcare/allergy/Retrieve%5Fan%5Fallergy.md#HealthcareCode)\[\]         | No       | Codings for observed reaction manifestations (e.g. hives, anaphylaxis)              |
| reactions\[\].system     | string                                                                                                             | No       | The code system URI (e.g. http://loinc.org, http://snomed.info/sct)                 |
| reactions\[\].code       | string                                                                                                             | No       | The code within the system                                                          |
| reactions\[\].display    | string                                                                                                             | No       | Human-readable display text for the code                                            |
| onset\_at                | string (date-time)                                                                                                 | No       | When the allergy was first identified (ISO-8601 / YYYY-MM-DDTHH:MM:SSZ format)      |
| recorded\_at             | string (date-time)                                                                                                 | No       | When the allergy was recorded (ISO-8601 / YYYY-MM-DDTHH:MM:SSZ format)              |
| notes                    | string                                                                                                             | No       | Free-text notes about the allergy                                                   |
| metadata                 | [HealthcareMetadata](https://docs.unified.to/healthcare/allergy/Retrieve%5Fan%5Fallergy.md#HealthcareMetadata)\[\] | No       |                                                                                     |
| metadata\[\].id          | string                                                                                                             | No       |                                                                                     |
| metadata\[\].value       | object                                                                                                             | No       |                                                                                     |
| metadata\[\].namespace   | string                                                                                                             | No       |                                                                                     |
| metadata\[\].format      | enum                                                                                                               | No       | Values: TEXT, NUMBER, DATE, BOOLEAN, ARRAY, OBJECT                                  |
| metadata\[\].extra\_data | object                                                                                                             | No       |                                                                                     |
| metadata\[\].slug        | string                                                                                                             | No       |                                                                                     |

## Errors

 Errors return the HTTP status code and a JSON body with `statusCode`, `error` (the short label) and `message` (a human-readable detail). 

```json
{
  "statusCode": 429,
  "error": "Too Many Requests",
  "message": "Too many requests to unified.to API; max requests per minute: N"
}
```

| Status | Error                 | Meaning                                           |
| ------ | --------------------- | ------------------------------------------------- |
| 400    | Bad Request           | The request was malformed or failed validation.   |
| 401    | Unauthorized          | The connection is likely broken; re-authorize it. |
| 403    | Forbidden             | The connection is missing permissions or scopes.  |
| 404    | Not Found             | The requested resource does not exist.            |
| 429    | Too Many Requests     | Rate limit exceeded (see the two sources below).  |
| 500    | Internal Server Error | An unexpected error occurred.                     |
| 501    | Not Implemented       | Not supported by this integration.                |

 Errors from the underlying integration pass through: the integration's status comes back as ours (429, 401, 403, 404 or 5xx), usually with its message. When the integration's error body is unclear, Unified extracts what it can and returns a clearer message. 

### 429 Too Many Requests

A 429 has two possible sources:

* The integration's own rate limit, passed through.
* Unified's workspace limit: a rolling 60 seconds, set by plan, with the message `Too many requests to unified.to API; max requests per minute: N`.

## Code Samples

### Node.js SDK

```javascript
import { UnifiedTo } from '@unified-api/typescript-sdk';

const sdk = new UnifiedTo({
    security: {
        jwt: '<YOUR_API_KEY_HERE>',
    },
});

const connectionId = '5de520f96e439b002043d8dc';

const id = '1234';

const results = await sdk.healthcare.getHealthcareAllergy({ connectionId, id, 
    fields: '',
    raw: '',
 });
```

### Node.js (axios)

```javascript
const options = {
  method: 'GET',
  url: 'https://api.unified.to/healthcare/5de520f96e439b002043d8dc/allergy/5de520f96e439b002043d8d8',
  headers: {
    authorization: 'bearer .....'
  },
  params: {
    fields: '',
    raw: '',
  }
};

const results = await axios.request(options);
```

### Java

```java
AsyncHttpClient client = new DefaultAsyncHttpClient();

client.prepare("GET", "https://api.unified.to/healthcare/5de520f96e439b002043d8dc/allergy/5de520f96e439b002043d8d8?fields=&raw=")
  .setHeader("accept", "application/json")
  .setHeader("authorization", ".....")
  .execute()
  .toCompletableFuture()
  .thenAccept(System.out::println)
  .join();

client.close();
```

### Go

```go
import (
	"fmt"
	"net/http"
	"io/ioutil"
)

url := `https://api.unified.to/healthcare/5de520f96e439b002043d8dc/allergy/5de520f96e439b002043d8d8?fields=&raw=

req, _ := http.NewRequest("GET", url, nil)

req.Header.Add("accept", "application/json")
req.Header.Add("authorization", ".....")

res, _ := http.DefaultClient.Do(req)

defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
```

### Python

```python
import requests

url = "https://api.unified.to/healthcare/5de520f96e439b002043d8dc/allergy/5de520f96e439b002043d8d8?fields=&raw="

headers = {
    "accept": "application/json",
    "authorization": "....."
}

response = requests.get(url, headers=headers)
```

### PHP

```php
$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.unified.to/healthcare/5de520f96e439b002043d8dc/allergy/5de520f96e439b002043d8d8?fields=&raw=",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "accept: application/json",
    "authorization: ....."
  ],
]);
```

### Ruby

```ruby
require 'uri'
require 'net/http'
require 'openssl'

url = URI("https://api.unified.to/healthcare/5de520f96e439b002043d8dc/allergy/5de520f96e439b002043d8d8?fields=&raw=")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["accept"] = 'application/json'
request["authorization"] = '....'

response = http.request(request)
puts response.read_body
```

### cURL

```bash
curl --request GET \
  --url 'https://api.unified.to/healthcare/5de520f96e439b002043d8dc/allergy/5de520f96e439b002043d8d8?fields=&raw=' \
  --header 'accept: application/json' \
  --header 'authorization: .....'
```
