Table of Contents
- 1 Which tubes are plasma?
- 2 What additive is in a red top tube?
- 3 What is serum and plasma?
- 4 What tests are done on plasma?
- 5 What color tube is used for plasma?
- 6 What do the colors on blood tubes mean?
- 7 Is serum same as plasma?
- 8 Can a red top tube be substituted for a serum tube?
- 9 What’s the difference between plasma and serum blood?
- 10 What do you use to separate RBCs from serum?
Which tubes are plasma?
Serum and plasma tubes
| The commercially available plasma tubes are as follows: | |
|---|---|
| Lavender | Treated with EDTA. |
| Blue | Treated with citrate. |
| Green | Treated with heparin. |
| Grey | Treated with potassium oxalate/sodium fluoride (not evaluated). |
What additive is in a red top tube?
Blood Collection Tubes
| Tube cap color | Additive |
|---|---|
| Red or gold (mottled or “tiger” top used with some tubes) | Serum tube with or without clot activator or gel |
| Green | Sodium or lithium heparin with or without gel |
| Lavender or pink | Potassium EDTA |
| Gray | Sodium fluoride, and sodium or potassium oxalate |
What color is serum separator tube?
PHLEBOTOMY SERVICES
| STOPPER COLOR | CONTENTS | VOL. |
|---|---|---|
| Gold Top (Serum Separator, “SST”) | Contains separating gel and clot activator | 6.0 mL |
| Light Blue – Yellow Label on Tube | Thrombin | 2.0 mL |
| Green | Sodium heparin(100 USP Units) | 5.0 mL |
| Tan | K2 EDTA | 5.0 mL |
What is serum and plasma?
Serum and plasma both come from the liquid portion of the blood that remains once the cells are removed, but that’s where the similarities end. Serum is the liquid that remains after the blood has clotted. Plasma is the liquid that remains when clotting is prevented with the addition of an anticoagulant.
What tests are done on plasma?
Plasma protein tests are blood tests that detect the amount of proteins in the blood. This lab work is usually ordered as part of a comprehensive metabolic panel (CMP) during a physical exam. The tests can help your doctor determine your overall health. Plasma protein tests are also known as a total protein test.
Which test would not be performed on plasma or serum?
EDTA plasma samples are not generally used in the chemistry laboratory because of interference with calcium, electrolytes, iron, magnesium, and alkaline phosphatase assays as noted in the WHO document.
What color tube is used for plasma?
Green-
Green-top tube: Contains sodium heparin or lithium heparin. Use: Heparinized whole blood or plasma.
What do the colors on blood tubes mean?
Red: Contain NO anticoagulants, used for serum testing. Serum is fluid that is left behind after the cells are removed due to clotting. Gold: Contains a clot activator and special gel to separate serum from the cells. Purple: Contains a clot blocker and are used for complete blood count(CBC).
Does serum contain red blood cells?
Serum includes all proteins not used in blood clotting; all electrolytes, antibodies, antigens, hormones; and any exogenous substances (e.g., drugs or microorganisms). Serum does not contain white blood cells (leukocytes), red blood cells (erythrocytes), platelets, or clotting factors. The study of serum is serology.
Is serum same as plasma?
Serum is the liquid that remains after the blood has clotted. Plasma is the liquid that remains when clotting is prevented with the addition of an anticoagulant.
Can a red top tube be substituted for a serum tube?
*Serum separator tubes (tiger top) can be substituted for red top tubes in some instances but should be avoided for certain endocrinology and clinical pathology tests. Please centrifuge theserum separator tubes after a clot forms, transfer the supernatant to another tube and label the new tube with owner, animal ID, and as SERUM.
What’s the difference between red and yellow blood collection tubes?
1. Red The red bottle is less common – it is used for biochemistry tests requiring serum which might be adversely affected by the separator gel used in the yellow bottle. Additive: None or contains silica particles which act as clot activators.
What’s the difference between plasma and serum blood?
The essential difference between plasma and serum is that plasma retains fibrinogen (the clotting component), which is removed from serum. Serum is obtained from clotted blood that has not been mixed with an anticoagulant (a chemical that prevents the clotting of blood).
What do you use to separate RBCs from serum?
One technical solution to the problem of RBCs remaining in contact with the serum or plasma is to use serum separator tubes (SSTs). These are evacuated blood drawing tubes that contain a silicone gel that has a density intermediate between serum and red blood cells.