At 14:27 +1000 12/5/1999, Aaron Wieland wrote:

>alexs wrote:
>>
>> Beef, flank, separable lean and fat, trimmed to 0" fat, choice, raw
>> NDB No:     13065
>> Vitamin C, ascorbic acid:  0.000 mg per 100 grams of edible portion
>>
>The nutrient value cited above probably *was* assumed to be zero.  Just
>because the value is listed in the database doesn't mean that it was
>determined by analysis.  If you were privy to the complete database, you
>could look at the code for the methodology used, which would probably
>indicate an assumed value.

This is correct. The source field is 7:

 ~7~^~Assumed zero; not biologically present or insignificant amt.~

 ...Richard.