Instructions for Specimen Collection

Type of specimen	Save utensils	Collection method	Storage temperature	Abnormal traits
serum	Yellow Head Tube (SST)	Blood was collected from a vein, left to stand for 30 minutes, and then centrifuged and aliquoted into a sterile centrifuge tube	2-8°C	Hemolysis, lipidemia, jaundice, incomplete coagulation
plasma	Anticoagulant-containing Purple Head Plasma Tube (EDTA)	Venous blood is taken and immediately gently reversed to mix	2-8°C	Hemolysis, lipidemia, coagulation
cerebrospinal fluid	Sterile PP tubing	Lumbar puncture is obtained and aliquoted into multiple sterile tubes	2-8°C	Contamination, excessive cell count
saliva	Sterile saliva collection tubes	Collect in the morning on an empty stomach, clean your mouth, and avoid eating, drinking, and smoking	2-8°C	Too little saliva, pollution

Temperature: Most specimens need to be refrigerated at 2-8°C, and some special specimens may need to be frozen or stored at room temperature.
Time: The specimen should be sent for testing as soon as possible, if it cannot be sent for immediate testing, please store it properly according to the above storage conditions.
Containers: Use sterile, clean collection containers to avoid contamination.
Labeling: The patient’s name, date of birth, test items, collection time and other information should be clearly marked on the sample container.

Serum and plasma: Hemolysis and lipid blood should be avoided when venous blood is collected, and centrifugation should be carried out after 30 minutes or 1 hour after collection.
cerebrospinal fluid: Lumbar puncture collection by a medical professional, care should be taken to avoid contamination.
Saliva: Please do not eat, drink, or smoke before collection, and avoid contact between saliva and the wall of the container during collection.

Hemolysis: Excessive needle strength, excessive blood extraction, and excessive shaking may cause hemolysis during blood collection.
Lipidemia: Patients with postprandial blood sampling or hyperlipidemia are prone to lipidemia.
Jaundice: People with liver disease are prone to jaundice.
Coagulation insufficiency: Patients with inadequate anticoagulant use or coagulation abnormalities are prone to coagulopathy.
Contamination: Failure to pay attention to aseptic work during the collection or storage process can easily lead to contamination of the sample.

The patient information on the test submission form does not match the information indicated in simplified Chinese
If the sample is abnormal, with hemolysis of 3+, lipid of 3+, and jaundice of 3+, it is necessary to return the sample if it may affect the test results
- hemolysis
- Lipidemia
- jaundice

The type of specimen that does not meet the requirements of the inspection item

Special Tests: Some special tests may require special collection and storage, so please be sure to follow your doctor’s instructions.
Emergency Testing: If it is an urgent examination, please notify the laboratory immediately.
Duplicate specimen collection: Recollection may be required if the sample is insufficient or of poor quality.