Magnesium
- LIS Mnemonic: MG
Collect
Light Green (PST - Lithium Heparin)
Satellite locations must send Gold top tube
Volume Required
0.5 mL blood
Minimum Required
0.2 mL blood
Transport
Room temperature
Stability
24 hrs room temp, 5 days refrigerated
Processing
All chemistry specimens collected in a SST or PST should be centrifuged at 3,400 RPM's for 10 minutes. If there is gel separating the serum or plasma from the red cells, it is not necessary to transfer the serum or plasma to another tube. Follow directions in the centrifuge manual to set the centrifuge appropriately.If there is not gel separating the serum or plasma from the red cells, transfer the serum or plasma using a disposable pipette to another tube (pour off tube) being careful not to disturb the buffy coat. Rubber band the original tube (parent tube) with the labeled pour off tube prior to sending the specimen to CLS.
Days Performed
24/7
Reported
Stat: 45 Min. Routine: 90 Min.
Reflex Testing
N/A
CPT
83735
Methodology
Colorimetric
Remarks
SST acceptable. Use light green microtainer for min vol.
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