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Additives
| Tube Color / Test | Additive |
|---|---|
| Blood Culture | Aerobic and Anaerobic |
| Yellow Top | Sodium Polyanethol Sulfate (SPS) and Acid Citrate Dextrose (ACD) |
| Light Blue Top | Sodium Citrate |
| Plain Red | None |
| Red SST | Gel |
| Plasma Tests | Ammonium Heparin (AH) Sodium Heparin (SH) Lithium Heparin (LH) |
| Ammonia | Sodium Heparin (SH) Lithium Heparin (LH) |
| Electrolytes (MG, K, CHL) | Ammonium Heparin (AH) Sodium Heparin (SH) Lithium Heparin (LH) |
| NA - Sodium | Ammonium Heparin (AH) Lithium Heparin (LH) |
| Lavender Top | EDTA |
| Pink Top | EDTA |
| White Top | EDTA |
| Royal Blue / Dark Blue | EDTA |
| Tan / Marble | EDTA |
| Gray | Sodium Fluoride (SF) Potassium Oxalate (PO) |