The most useful measures are shown at the top of the list. In addition to total vitamin K2, total vitamin K includes the small amount of vitamin K1 that is present in some of these foods. MK-4 is the form that plays a specific role in regulating gene expression. MK-4 and MK-7 are the two forms that have been studied well and shown to support the activation of vitamin K-dependent proteins produced outside the liver.

Values are reported as μg/100g food for solids or μg/100 ml food for liquids.  NM=Not Measured. ND=Not Detected.

Heart, Chicken

• Total Vitamin K2= 14
• Total Vitamin K= 15
• MK-4= 14
• MK-7= 0
• Sum of MK-4 + MK-7= 14
• MK-5= 0
• MK-6= 0
• MK-8= 0
• MK-9= 0
• MK-10= 0
• MK-11= 0
• MK-12= 0
• MK-13= 0
• Vitamin K1= 1
• Category:  Organ Meats (Offal)
• Reference:   Hirauchi, Hirauchi K, Sakano T, Notsumoto S, Nagaoka T, Morimoto A, Fujimoto K, Masuda S, Suzuki Y. (1989) Measurement of K vitamins in animal tissues by high-performance liquid chromatography with fluorimetric detection. Journal of Chromatography. 29;497:131-7. (Pubmed). Cited at https://honey-guide.com/page/2/