Vitamin K deficiency Symptoms Laboratory findings in various platelet and coagulation disorders ( 
 V 
 - 
 T 
 )

| Condition_ | Prothrombin_time | Partial_thromboplastin_time | Bleeding_time | Platelet_count |
|---|---|---|---|---|
| Bernard-Soulier syndrome | Unaffected | Unaffected | Prolonged | Decreased or unaffected |
| Factor XII deficiency | Unaffected | Prolonged | Unaffected | Unaffected |