What is the lavender blood tube used for?
Lavender Top Tube: This tube is used to for Hematology (CBC, e.g.) and certain Chemistry and Blood Bank testing. The tube contains EDTA as an anticoagulant. Samples collected in lavender tubes may not be used for coagulation tests. Light Blue Top Tube: This tube is used for coagulation testing.
What does a purple blood vial mean?
Purple blood bottles contain EDTA (ethylenediaminetetraacetic acid), which acts as a potent anticoagulant by binding to calcium in the blood. EDTA also binds metal ions in the blood and is used in chelation therapy to treat iron, lead or mercury poisoning.
What additive is in a lavender tube?
K2EDTA additive
Lavender – Tube contains K2EDTA additive, used for hematology testing. a. Collected first to obtain adequate volume, minimize platelet clumping, and ensure accurate hematology test results.
Which vial has lavender purple Colour stopper?
Types of tubes
| Tube cap color or type | Additive |
|---|---|
| Dark green | Sodium heparin (anticoagulant) |
| Mint green | Lithium heparin (anticoagulant) |
| Lavender (“purple”) | EDTA (chelator / anticoagulant) |
| Pink | EDTA (chelator / anticoagulant) |
What does each blood tube test for?
Blood Collection Tubes
| Tube cap color | Additive | Common laboratory tests |
|---|---|---|
| Lavender or pink | Potassium EDTA | Hematology and blood bank |
| Gray | Sodium fluoride, and sodium or potassium oxalate | Glucose (especially when testing will be delayed), blood alcohol, lactic acid |
What is the difference between K2 and K3 EDTA tubes?
The main difference between K2 EDTA and K3 EDTA is that K2 EDTA contains two chelated potassium ions whereas K3 EDTA contains three chelated potassium ions.
What tubes do you use for blood draws?
PHLEBOTOMY SERVICES
| STOPPER COLOR | CONTENTS | VOL. |
|---|---|---|
| Red | No additive | 7.0 mL |
| Light Blue | 3.2% Sodium Citrate | 4.5 mL |
| Gold Top (Serum Separator, “SST”) | Contains separating gel and clot activator | 6.0 mL |
| Light Blue – Yellow Label on Tube | Thrombin | 2.0 mL |
What is the additive in lavender top?
Potassium EDTA
Blood Collection Tubes
| Tube cap color | Additive | Common laboratory tests |
|---|---|---|
| Lavender or pink | Potassium EDTA | Hematology and blood bank |
| Gray | Sodium fluoride, and sodium or potassium oxalate | Glucose (especially when testing will be delayed), blood alcohol, lactic acid |
What color is an EDTA 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 |