API LootSlotIsItem

Returns

 * isLootItem : Boolean - is it a loot item instead of a coin

Example
Iterate through the items in the currently opened loot window an display them in the chat frame, side by side. local itemLinkText for i = 1, GetNumLootItems do    if (LootSlotIsItem(i)) then local iteminfo = GetLootSlotLink(i); if itemLinkText == nil then itemLinkText = iteminfo else itemLinkText = itemLinkText..iteminfo end end end DEFAULT_CHAT_FRAME:AddMessage(itemLinkText)