BK5 Med Health Clinic logoBK5 Med Health ClinicDon Hua Lo, Chon Buri

Health article

Pre-employment health check: documents and steps to prepare

Most employers require a health check before your first day. This guide covers what to prepare, what is usually tested, and how to get your medical certificate on time.

Published 24 September 20265 min read

Why employers require it

A pre-employment health check serves three purposes: confirming you are fit for the specific job, identifying health risks in that work environment, and recording baseline results for future comparison. If a health problem related to work appears later, the pre-employment results provide a reference point.

Because of this, the test list differs between companies. It depends on the industry, the role, and the requirements of that employer's safety or risk team.

Documents to prepare

Complete documents help ensure the check matches your employer's requirements and shorten your wait at the clinic.

  • Your ID card (original or a clear copy)
  • Your company's health form or test order, if they provide one
  • Any employment confirmation letter requested by the clinic
  • Information about chronic conditions, medicines and past surgery
  • Your glasses or hearing aids if vision or hearing will be tested

Tests commonly included

A standard package usually includes history taking and a physical examination by a doctor, a complete blood count, blood sugar, urine analysis and a chest X-ray to screen for tuberculosis. Many employers add drug screening under their safety policy, and some roles add vision, hearing, lung function or an electrocardiogram.

If your company specifies a particular list, send it to the clinic in advance so the team can prepare and estimate the time needed.

How to prepare so results are accurate

If blood sugar or lipids are included, fast for at least 8 hours; plain water is fine. Avoid alcohol for at least 24 hours and get a full night's sleep, because sleep loss affects blood pressure and some test values.

For the chest X-ray, tell our staff immediately if you are or may be pregnant, and remove metal jewellery from the chest area before imaging.

Where to go and how long it takes

The examination and sample collection can be done at the clinic. Most lab results are ready within 30-60 minutes, and the medical certificate is usually issued the same day once the required items are complete. For groups, ask our team to arrange queue and appointment scheduling.

Key points: Bring your ID card, your company's form and your health information, fast if blood sugar or lipids are included, and send the company's test list to the clinic in advance so your certificate arrives before your start date.

This article is general information, not personal medical advice. Diagnosis and treatment require assessment by a doctor. Please consult our medical staff before making decisions.

Health article

Frequently asked questions in this article

What if my company's test list differs from the standard package?

Send the list or requirements to our staff in advance on LINE @824xsgsj and we will build the package and estimate timing before your visit.

Can I test if I already ate?

Fasting tests such as blood sugar and lipids need at least 8 hours without food. Tell our staff if you have eaten so we can reschedule or adjust the items.

When can I collect the medical certificate?

Usually the same day. If send-out tests are included, our staff will confirm the collection date clearly at registration.

Contact us

Book a visit or ask a question

Add us on LINE @824xsgsj to ask about tests and pricing, or fill in the form below and our team will get back to you as soon as possible.

LINE Official

@824xsgsj
LINE QR code to add @824xsgsj on LINE

Address

149/6-7 Don Hua Lo, Chon Buri District, Chon Buri 20000, Thailand

Get directions (Google Maps)

Opening hours

Monday - Friday
08.30 - 20.00
Saturday
08.30 - 17.00

Request a callback

Leave your name and a contact channel and we will call or message you back during opening hours.

Please provide a phone number or LINE ID.

Preferred contact channel
Call nowLINE @824xsgsj