1. Biological samples for heavy metal analysis should be collected follow the specimen requirement as shown in the table.

anticoagulant in heparinized tube (green cap)

2. Preserve samples at 2-8 ◦C
3. Label the containers and complete the analysis request form
4. Send the biological samples to laboratory, Department of Social and Environmental Medicine, Faculty of Tropical Medicine, 6^th Chamlong Harinasuta building within 48 hours together with the request form and take the copy back.
5. Laboratory turnaround time: within 14 days.
6. Report the analysis results and payment

1. The customer may request a water sample bottle from the lab. Collect the sample in clean containers about 1 liter, add 1 ml of concentrated nitric acid to controlled the pH to less than 2 and keep at 2-8 ^oC until sent to the laboratory.
2. Label the containers and complete the analysis request form. (Download label)
3. Send the samples to laboratory, Department of Social and Environmental Medicine, Faculty of Tropical Medicine, 6^th Chamlong Harinasuta building within 48 hours together with the request form and take the copy back.
4. Laboratory turnaround time: within 14 days.
5. Report the analysis results and payment

1. Collect 1 kg of soil/ sludge / sediment samples to plastic bag or plastic container and maintain at 2-8 ^o
2. Label the containers and complete the analysis request form
3. Send the biological samples to laboratory, Department of Social and Environmental Medicine, Faculty of Tropical Medicine, 6^th Chamlong Harinasuta building within 48 hours together with the request form and take the copy back.
4. Laboratory turnaround time: within 14 days.
5. Report the analysis results and payment