Is DGX (Quest Diagnostics Incorporated) Halal or Haram?

Based on our AAOIFI-standard shariah screening, DGX is Halal and considered permissible for Muslim investors. It passed all 4 of 4 compliance screens including business activity review, debt-to-market-cap ratio (29.93% vs ≤33% threshold), interest income ratio (0.00% vs ≤5% threshold), and cash & securities ratio (1.82% vs ≤33% threshold).

Quest Diagnostics is a titan in the American healthcare landscape , operating as the world's leading provider of diagnostic information services. They are the engine behind the routine blood work, advanced genetic testing, and anatomic pathology results that doctors rely on to make critical treatment decisions. Beyond just running labs, they manage a massive logistics network under brands like AmeriPath and ExamOne, serving everything from individual patients and hospitals to large employers and life insurance companies . For Muslim investors, DGX is currently classified as Halal, having passed all four rigorous AAOIFI screening criteria. This is significant because healthcare companies often carry heavy debt loads to fund research or infrastructure, but Quest has managed to keep its interest-bearing debt below the critical 33% threshold relative to its market capitalization. This compliance signals that the company' s financial structure aligns with Islamic principles, avoiding excessive leverage that shariah standards prohibit. From a financial health perspective, the most attractive metric for halal investors is the company's clean revenue stream. With interest income sitting at 0.0 0% of total revenue, investors can be confident that profits are generated through legitimate medical services rather than impermissible interest-based activities. However, the debt ratio sits at 29.9%, which is close to the 33% limit; investors should monitor this closely in future quarters, as a drop in stock price or increase in borrowing could push it into non-compliant territory. While there is no significant scholarly debate regarding the permissibility of diagnostic medicine, the primary watch-out for this stock remains its leverage. Investors should add DGX to their watchlist but revisit the debt-to-market cap ratio during quarterly earnings updates to ensure it remains compliant as market valuations fluctuate. Quest Diagnostics Incorporated operates in the Healthcare sector under the Medical - Diagnostics & Research industry and is headquartered in Secaucus, NJ, US. The company is led by CEO James E. Davis and employs approximately 55,000 people.

DGX was screened using AAOIFI-based shariah compliance criteria. Four tests are applied: (1) Business Activity — the company's core business must not derive primary income from haram (prohibited) activities such as alcohol, gambling, tobacco, or interest-based finance. (2) Debt-to-Market-Cap — total debt must not exceed 33% of market capitalization. (3) Interest Income — interest income must not exceed 5% of total revenue. (4) Cash & Securities — cash and interest-bearing securities must not exceed 33% of market cap. DGX passed 4 of these 4 screens.

DGX has negligible interest income, so purification may not be necessary. However, it is always advisable to consult a qualified scholar regarding your specific investment situation.

DGX was last screened on 2026-02-25. Shariah compliance status can change as companies report new financial data, acquire new businesses, or shift revenue streams. We recommend checking back periodically for the most up-to-date screening results.