**Refer to FCM Flow Chart for ordering guide**
https://nuhsingapore.testcatalog.org/catalogs/394/files/6372

Submit one of the following: Bone marrow, peripheral blood, lymph node, solid tumour OR body fluid

For bone marrow collection:
1. Collect bone marrow into lavender top tube.
2. Gently invert the tube 8 - 10 times.
3. Send specimen to the laboratory immediately.

For peripheral blood collection:
1. Draw sufficient blood into lavender top tube.
2. Draw 2 tubes if WBC <5x10⁹/L.
3. Gently invert the tube 8 - 10 times.
4. Send specimen to the laboratory immediately.

For lymph node, solid tumour collection:
1. Prearrange with laboratory for transport medium.
2. Collect specimen directly into 5 mL RPMI 1640 medium after biopsy.
3. Do not leave tissue to air-dry or fix tissue in formalin.
4. Send specimen to the laboratory immediately.

For body fluid collection:
1. Prearrange with laboratory for transport medium
2. Collect specimen into a container with 0.6 mL transfix medium.
3. Send specimen to the laboratory immediately.

All specimens should be sent in ambient temperature (18 - 25˚C). Specimens should be sent to the testing laboratory within 24 - 48 hours of collection. Specimen received after 48 hours of collection will nonetheless be processed but results may be compromised.

Refer to testing laboratory test catalogue for more information:
https://nuhsingapore.testcatalog.org/show/8AML