Tidlige symptomer (symptomatisk hyperlactatæmi) omfatter lette fordøjelsessymptomer (kvalme, opkastning og abdominalsmerter), uspecifik utilpashed, appetitløshed, vægttab, respiratoriske symptomer (hurtigt åndedræt og/ eller dybe indåndinger) eller neurologiske symptomer (herunder motorisk svaghed).
Early symptoms (symptomatic hyperlactatemia) include benign digestive symptoms (nausea, vomiting and abdominal pain), non-specific malaise, loss of appetite, weight loss, respiratory symptoms (rapid and/ or deep breathing) or neurological symptoms (including motor weakness).