Quest Diagnostics

Lab Testing at Ab Lab & Diagnostics Llc

Quest partner location in Merrillville, IN 46410.

Partner Location

This location is part of Quest's partner network. Services and availability may differ from a standard Quest Patient Service Center. Please call 800-318-2900 before visiting to confirm they accept your lab order.

Order Lab Tests Online

Browse All Tests

Note: tests available at this location depend on its services. Confirm by calling before visiting.

Address

5475 Broadway
Merrillville, IN 46410
Lake County

800-318-2900

Hours

Monday	8:00 AM – 5:00 PM
Tuesday	8:00 AM – 5:00 PM
Wednesday	8:00 AM – 5:00 PM
Thursday	8:00 AM – 5:00 PM
Friday	8:00 AM – 5:00 PM
Saturday	Closed
Sunday	Closed

Nearby alternatives

LabCorp Merrillville
400 W Lincoln Hwy, Merrillville, IN 46410
3.3 mi
Quest Diagnostics - Crown Point Merrillville
119 E 93rd Ave, Crown Point, IN 46307
4.8 mi
LabCorp Crown Point
9150 E 109th Ave Ste E-1, Crown Point, IN 46307
9 mi
Quest Diagnostics - Lansing Psc
17665 Torrence Ave, Lansing, IL 60438
12.2 mi
Core Diagnostics Llc
3831 Hohman Ave, Hammond, IN 46327
12.7 mi

About this location

Quest partner location. Quest Diagnostics operates one of the largest networks of clinical laboratories in the United States, offering a wide range of diagnostic tests for patients, physicians, and employers.

Listing last updated 2026-04-25.