** NOTE: All laboratory testing requires an authorizing physician. DHA Laboratory offers a patient direct program that partners your with an authorizing physician. If you have any additional questions regarding the availability of testing, please contact our laboratory by telephone or email. **
To determine Vitamin C deficiency. Vitamin C is needed for growth, development and repair of all body tissues. Vitamin C deficiency may be due to malnutrition (scurvy), malabsorption, alcoholism, kidney failure, hyperthyroidism and increased need due to pregnancy.