Which of the following tests is commonly associated with green topped tubes?

The correct association for green topped tubes is indeed with LYTES - STAT tests. Green topped tubes contain sodium heparin as an anticoagulant, which preserves plasma for various laboratory analyses, particularly those requiring immediate results.

LYTES, which often refers to electrolyte panels or tests that evaluate levels of essential ions such as sodium, potassium, and others in the blood, are commonly performed using plasma obtained from green topped tubes. The use of heparin in these tubes allows for quick processing without the need for further anticoagulant preparations, making them ideal for STAT tests where timely results are critical.

In contrast, the other tests mentioned typically utilize different tube types. For example, the erythrocyte sedimentation rate (ESR) is typically performed using a lavender or black topped tube containing EDTA, while a Complete Blood Count (CBC) also commonly uses a lavender topped tube. The Type and Screen Ratio test often employs a pink or purple top tube, which also contains EDTA to prevent coagulation. Thus, the green topped tube's primary association is with tests like LYTES - STAT that require rapid analysis of plasma.