Hide Filters Sort by popularity Default sortingSort by popularitySort by average ratingSort by latestSort by price: low to highSort by price: high to low Thyroxine ( T4 ) Free Direct $55.00 Thyroxine ( T4 ) $45.00 Testosterone Free and Total $95.00 Rheumatoid Arthritis Factor $45.00 Sedimentation Rate Westergren $35.00 T3 Uptake $39.00 1 2 3 4