HIV test (4th generation) cost in New York, NY
In New York-Newark-Jersey City, NY-NJ, 80 hospitals list a cash price for HIV-1/2 antigen and antibody combination blood test (4th generation): from $18.67 to $906.00, with a median of $27.69. The lowest listed price is at Interfaith Medical Center and 2 other hospitals — $9.02 less than the median here. Across New York, the median is $72.00 at 108 hospitals.
- The median here, $27.69, is 67% below the US median of $83.85.
- That is 1.1× Medicare's 2026 national rate for the same service ($24.08).
- 18 of 80 hospitals list a cash price equal to their full list price, with no self-pay discount.
Cash prices at 80 facilities across 56 cities for code 87389, as an outpatient — the setting a self-pay patient normally buys. Collected Nov 11, 2026; the hospital files themselves were last updated between Oct 28, 2025 and Sep 28, 2026.
Where each hospital's price falls
Each dot is one hospital's cash price on a scale from the lowest to the highest in New York-Newark-Jersey City, NY-NJ.
Hospitals, cheapest first
| Hospital | Cash price | List price | Insurers pay | Off list |
|---|---|---|---|---|
| Interfaith Medical Center lowest Brooklyn, NY HC HIV COMBO 4TH GEN File of Aug 1, 2026 · source file | $18.67 | $54.00 | $18.67–$43.34 | 65% |
| Kingsbrook Jewish Medical Center lowest Brooklyn, NY HC HIV COMBO 4TH GEN File of Aug 1, 2026 · source file | $18.67 | $54.00 | $17.74–$43.34 | 65% |
| Brookdale Hospital Medical Center lowest Brooklyn, NY · (718) 240-5966 HC HIV COMBO 4TH GEN File of Aug 1, 2026 · source file | $18.67 | $54.00 | $18.67–$42.02 | 65% |
| Saint Marys Hospital Passaic, NJ · (973) 365-4300 Hc Eia Hiv-1/Hiv-2 Screen - 87389 - 30200255+1 more line at this price File of Sep 1, 2026 · source file | $24.00 | $99.00 | $14.45–$102.34 | 76% |
| Southern Ocean Medical Center Manahawkin, NJ · (609) 597-6011 HIV 1/2 ANTIGEN AND ANTIBODY+3 more lines at this price File of Dec 31, 2025 · source file | $24.08 | $245.00 | $45.33–$240.98 | 90% |
| Old Bridge Medical Center Old Bridge, NJ HIV 1/2 ANTIGEN AND ANTIBODY+3 more lines at this price File of Dec 31, 2025 · source file | $24.08 | $245.00 | $32.59–$238.36 | 90% |
| Raritan Bay Medical Center Perth Amboy, NJ · (732) 324-5000 HIV 1/2 ANTIGEN AND ANTIBODY+3 more lines at this price File of Dec 31, 2025 · source file | $24.08 | $245.00 | $32.59–$238.36 | 90% |
| Ocean Medical Center Brick, NJ · (732) 840-2200 HIV 1/2 ANTIGEN AND ANTIBODY+7 more lines at this price File of Dec 31, 2025 · source file | $24.08 | $245.00 | $34.79–$238.43 | 90% |
| South Brooklyn Health Brooklyn, NY · (718) 616-4834 HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $23.60–$111.31 | 76% |
| JFK University Medical Center Edison, NJ · (732) 321-7000 HIV-1/2 ANTIGEN AND ANTIBODIES FOURTH GENERATION WITH REFLEXES Q+7 more lines at this price File of Dec 31, 2025 · source file | $24.08 | $245.00 | $39.45–$231.77 | 90% |
| Palisades Medical Center North Bergen, NJ · (201) 854-5000 HIV 1/2 ANTIGEN AND ANTIBODY+3 more lines at this price File of Dec 31, 2025 · source file | $24.08 | $245.00 | $41.90–$228.95 | 90% |
| Bellevue Hospital Center New York, NY · (212) 561-4132 HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $1.00–$92.76 | 76% |
| St Joseph's Hospital, Yonkers Yonkers, NY · (914) 378-7000 Hiv-1 ag w/hiv-1&-2 ab ag ia+2 more lines at this price File of Jul 13, 2026 · source file | $24.08 | — | $20.92–$289.10 | — |
| Jacobi Medical Center Bronx, NY · (718) 918-5000 HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $23.60–$121.43 | 76% |
| Hackensack University Medical Center Hackensack, NJ · (551) 996-2000 HIV 1/2 ANTIGEN AND ANTIBODY+3 more lines at this price File of Dec 31, 2025 · source file | $24.08 | $245.00 | $61.50–$245.00 | 90% |
| Kings County Hospital Center Brooklyn, NY · (718) 245-3901 HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $1.00–$92.46 | 76% |
| Elmhurst Hospital Center Broadway Elmhurst, NY · (718) 334-1141 HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $1.00–$91.87 | 76% |
| North Central Bronx Hospital Bronx, NY HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $1.00–$91.57 | 76% |
| Queens Hospital Center Jamaica, NY · (718) 883-3000 HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $23.60–$97.22 | 76% |
| Lincoln Medical & Mental Health Center Bronx, NY · (718) 579-5000 HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $1.00–$92.76 | 76% |
| Riverview Medical Center Red Bank, NJ · (732) 741-2700 HIV 1/2 ANTIGEN AND ANTIBODY+3 more lines at this price File of Dec 31, 2025 · source file | $24.08 | $245.00 | $34.55–$239.98 | 90% |
| Metropolitan Hospital Center New York, NY · (212) 423-6262 HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $1.00–$92.46 | 76% |
| Harlem Hospital Center New York, NY · (212) 939-1000 HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $1.00–$92.46 | 76% |
| Woodhull Medical & Mental Health Center Brooklyn, NY · (718) 963-8100 HC INFECTIOUS AGENT ANTIGEN DETECTION; HIV-1 ANTIGEN, WITH HIV-1 File of Sep 5, 2026 · source file | $24.08 | $102.36 | $22.02–$59.67 | 76% |
| Bayshore Medical Center Holmdel, NJ · (732) 739-5900 HIV 1/2 ANTIGEN AND ANTIBODY+3 more lines at this price File of Dec 31, 2025 · source file | $24.08 | $245.00 | $24.08–$238.43 | 90% |
| Jersey Shore University Medical Center Neptune City, NJ · (732) 775-5500 HIV 1/2 ANTIGEN AND ANTIBODY+3 more lines at this price File of Dec 31, 2025 · source file | $24.08 | $245.00 | $40.67–$245.00 | 90% |
| Robert Wood Johnson University Hospital Somerset Somerville, NJ · (908) 685-2200 HC Hiv 1 Antigens With Hiv 1 & Hiv 2 Antibodies by Immunoassay File of Mar 4, 2026 · source file | $26.49 | $100.00 | $11.32–$98.81 | 74% |
| Robert Wood Johnson University Hospital New Brunswick New Brunswick, NJ · (732) 828-3000 HC Hiv-1 Ag W/Hiv-1&-2 Ab Ag Ia+1 more line at this price File of Mar 4, 2026 · source file | $26.49 | $102.00 | $11.32–$111.48 | 74% |
| Trinitas Regional Medical Center Elizabeth, NJ · (908) 994-5000 HC Hiv 1 Antigens With Hiv 1 & Hiv 2 Antibodies by Immunoassay File of Mar 4, 2026 · source file | $26.49 | $174.00 | $11.32–$146.89 | 85% |
| Monmouth Medical Center Long Branch, NJ · (732) 222-5200 HC Hiv 1 Antigens With Hiv 1 & Hiv 2 Antibodies by Immunoassay File of Mar 4, 2026 · source file | $26.49 | $174.00 | $11.32–$168.27 | 85% |
| Monmouth Medical Center Southern Campus Lakewood, NJ · (732) 363-1900 HC Hiv 1 Antigens With Hiv 1 & Hiv 2 Antibodies by Immunoassay File of Mar 3, 2026 · source file | $26.49 | $174.00 | $11.32–$168.97 | 85% |
| Newark Beth Israel Medical Center Newark, NJ · (973) 926-7000 HC Hiv 1 Antigens With Hiv 1 & Hiv 2 Antibodies by Immunoassay File of Mar 4, 2026 · source file | $26.49 | $134.00 | $11.32–$125.06 | 80% |
| Community Medical Center Toms River, NJ · (732) 557-8000 HC Hiv 1 Antigens With Hiv 1 & Hiv 2 Antibodies by Immunoassay File of Mar 4, 2026 · source file | $26.49 | $174.00 | $11.32–$159.19 | 85% |
| Jersey City Medical Center Jersey City, NJ · (201) 915-2000 HC Hiv 1 Antigens With Hiv 1 & Hiv 2 Antibodies by Immunoassay File of Mar 4, 2026 · source file | $26.49 | $174.00 | $11.32–$157.93 | 85% |
| Clara Maass Medical Center Belleville, NJ · (973) 450-2000 HC Hiv 1 Antigens With Hiv 1 & Hiv 2 Antibodies by Immunoassay File of Mar 4, 2026 · source file | $26.49 | $130.00 | $11.32–$124.09 | 80% |
| Cooperman Barnabas Medical Center Livingston, NJ · (973) 322-5000 HC Hiv 1 Antigens With Hiv 1 & Hiv 2 Antibodies by Immunoassay File of Mar 4, 2026 · source file | $26.49 | $134.00 | $11.32–$113.90 | 80% |
| Robert Wood Johnson University Hospital Rahway Rahway, NJ · (732) 381-4200 HC Hiv-1 Ag W/Hiv-1&-2 Ab Ag Ia+1 more line at this price File of Mar 4, 2026 · source file | $26.49 | $102.00 | $11.32–$98.81 | 74% |
| Hackensack Meridian Mountainside Medical Center Montclair, NJ · (973) 429-6000 Detection test by immunoassay technique for HIV-1 antigen and HIV-1 and HIV-2 antibodies File of Feb 12, 2026 · source file | $27.69 | $38.85 | $4.08–$236.36 | 29% |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Ia Hiv 1 Ag 2 Hiv 1 & Hiv 2 Ab Sng Result File of Apr 1, 2026 · source file | $27.69 | $141.00 | — | 80% |
| University Hospital Newark, NJ · (973) 972-4300 IAAD IA HIV-1 AG W/HIV-1 & HIV-2 ANTBDY SINGLE File of Aug 13, 2026 · source file | $27.69 | $203.92 | $16.17–$193.72 | 86% |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Ia Hiv 1 Ag 2 Hiv 1 & Hiv 2 Ab Sng Result File of Apr 1, 2026 · source file | $27.69 | $141.00 | — | 80% |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Ia Hiv 1 Ag 2 Hiv 1 & Hiv 2 Ab Sng Result File of Apr 1, 2026 · source file | $27.69 | $186.00 | — | 85% |
| Newton Medical Center Newton, NJ · (973) 383-2121 Ia Hiv 1 Ag 2 Hiv 1 & Hiv 2 Ab Sng Result File of Apr 1, 2026 · source file | $27.69 | $141.00 | — | 80% |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Ia Hiv 1 Ag 2 Hiv 1 & Hiv 2 Ab Sng Result File of Apr 1, 2026 · source file | $27.69 | $141.00 | — | 80% |
| NYU Langone – Orthopedic Hospital New York, NY HC HIV-1 AG W/HIV-1 & HIV-2 AB File of Jan 1, 2026 · source file | $28.90 | $213.06 | $18.67–$245.38 | 86% |
| NYU Langone Brooklyn, NY HC HIV-1 AG W/HIV-1 & HIV-2 AB File of Jan 1, 2026 · source file | $28.90 | $213.06 | $18.67–$245.38 | 86% |
| NYU Langone – Tisch Hospital New York, NY · (212) 263-7300 HC HIV-1 AG W/HIV-1 & HIV-2 AB File of Jan 1, 2026 · source file | $28.90 | $213.06 | $18.67–$245.38 | 86% |
| NYU Langone Mineola, NY HC HIV-1 AG W/HIV-1 & HIV-2 AB File of Jan 1, 2026 · source file | $28.90 | $213.06 | $18.67–$245.38 | 86% |
| NYU Langone Hospital - Suffolk Patchogue, NY · (631) 654-7100 HC HIV-1 AG W/HIV-1 & HIV-2 AB File of Jan 1, 2026 · source file | $28.90 | $213.06 | $18.67–$245.38 | 86% |
| Nassau University Medical Center East Meadow, NY · (516) 572-0123 Hiv-1 Ag W/Hiv-1 & Hiv-2 Ab File of Oct 28, 2025 · source file | $55.30 | $79.00 | $9.86–$625.00 | 30% |
| Hudson Regional Hospital Secaucus, NJ · (201) 392-3200 Detection test by immunoassay technique for HIV-1 antigen and HIV-1 and HIV-2 antibodies File of Sep 23, 2026 · source file | $61.05 | $61.05 | $19.84–$115.20 | — |
| St Johns Episcopal Hospital Far Rockaway, NY · (718) 869-7000 HIV-1 AG W/HIV-1&-2 AB AG IA File of Apr 7, 2026 · source file | $61.40 | $72.24 | $22.88–$36.14 | 15% |
| Flushing Hospital Medical Center Flushing, NY · (718) 670-5000 DETECTION TEST BY IMMUNOASSAY TECHNIQUE FOR HIV-1 ANTIGEN AND HIV-1 AND HIV-2 ANTIBODIES File of Mar 25, 2026 · source file | $72.00 | $72.00 | $15.00–$1,912.00 | — |
| Jamaica Hospital Medical Center Jamaica, NY · (718) 262-6000 DETECTION TEST BY IMMUNOASSAY TECHNIQUE FOR HIV-1 ANTIGEN AND HIV-1 AND HIV-2 ANTIBODIES File of Mar 25, 2026 · source file | $72.00 | $72.00 | $15.00–$1,912.00 | — |
| The Valley Hospital Paramus, NJ · (201) 447-8000 HIV-1/2 Ag and AB Screen (Mayo File of May 6, 2026 · source file | $79.80 | $133.00 | $19.26–$113.05 | 40% |
| Mount Sinai Brooklyn Brooklyn, NY · (212) 420-2000 HC Iaad Ia Hiv-1 Ag W/Hiv-1 & Hiv-2 Antbdy Single File of Apr 1, 2026 · source file | $85.50 | $95.00 | — | 10% |
| The Mount Sinai Hospital New York, NY · (212) 241-7981 HC Iaad Ia Hiv-1 Ag W/Hiv-1 & Hiv-2 Antbdy Single File of Apr 1, 2026 · source file | $85.50 | $95.00 | — | 10% |
| Mount Sinai Queens Long Island, NY HC Iaad Ia Hiv-1 Ag W/Hiv-1 & Hiv-2 Antbdy Single File of Apr 1, 2026 · source file | $85.50 | $95.00 | — | 10% |
| Mount Sinai Morningside New York, NY HC Iaad Ia Hiv-1 Ag W/Hiv-1 & Hiv-2 Antbdy Single File of Apr 1, 2026 · source file | $85.50 | $95.00 | — | 10% |
| Children's Specialized Hospital Mountainside, NJ · (732) 258-7050 HC Hiv 1 Antigens With Hiv 1 & Hiv 2 Antibodies by Immunoassay File of Mar 4, 2026 · source file | $88.00 | $176.00 | $17.60–$172.48 | 50% |
| Good Samaritan Hospital Medical Center West Islip, NY · (631) 376-3000 HC HIV1HIV2 AB/AG SCREEN*C File of Feb 19, 2026 · source file | $88.89 | $112.00 | $18.67–$120.28 | 21% |
| Chsli St Joseph Hospital Bethpage, NY · (516) 759-6000 HC HIV1HIV2 AB/AG SCREEN*C File of Feb 19, 2026 · source file | $88.89 | $74.00 | $18.67–$88.89 | -20% |
| St. Francis Hospital Roslyn, NY HC HIV1HIV2 AB/AG SCREEN*C File of Feb 19, 2026 · source file | $88.89 | $72.00 | $18.67–$120.28 | -23% |
| Mercy Medical Center Rockville Centre, NY · (516) 705-2525 HC HIV1HIV2 AB/AG SCREEN*C File of Feb 19, 2026 · source file | $88.89 | $74.00 | $18.67–$120.28 | -20% |
| St. Catherine of Siena Medical Center Smithtown, NY · (631) 862-3000 HC HIV1HIV2 AB/AG SCREEN*C File of Feb 19, 2026 · source file | $88.89 | $73.00 | $18.67–$29,030.54 | -22% |
| Stony Brook Southampton Hospital Southampton, NY HIV-1 AG W/HIV-1&-2 AB AG IA File of Jun 17, 2026 · source file | $99.47 | $99.47 | $24.08–$31.30 | — |
| Maimonides Medical Center Brooklyn, NY · (718) 283-6000 HIV-1 ANTIGEN , W/HIV 1&2 AB File of Apr 1, 2026 · source file | $105.00 | $105.00 | — | — |
| Newton Medical Center Newton, NJ · (973) 383-2121 Ia Hiv 1 Ag 2 Hiv 1 & Hiv 2 Ab Sng Result File of Apr 1, 2026 · source file | $116.20 | $3,014.00 | — | 96% |
| Stony Brook University Hospital Stony Brook, NY · (631) 444-4000 DETECTION TEST BY IMMUNOASSAY TECHNIQUE FOR HIV-1 ANTIGEN AND HIV-1 AND HIV-2 ANTIBODIES File of Jun 10, 2026 · source file | $148.00 | $148.00 | $24.08–$4,255.00 | — |
| Overlook Medical Center Summit, NJ · (908) 522-2000 Ia Hiv 1 Ag 2 Hiv 1 & Hiv 2 Ab Sng Result File of Apr 1, 2026 · source file | $149.16 | $2,236.00 | — | 93% |
| Stony Brook University Hospital Stony Brook, NY · (631) 444-4000 HIV-1 AG W/HIV-1&-2 AB AG IA File of Jun 10, 2026 · source file | $158.00 | $158.00 | $24.08–$4,255.00 | — |
| Brooklyn Hospital Center at Downtown Campus Brooklyn, NY · (718) 250-8000 DETECTION TEST BY IMMUNOASSAY TECHNIQUE FOR HIV-1 ANTIGEN AND HIV-1 AND HIV-2 ANTIBODIES File of Jul 27, 2026 · source file | $172.81 | $172.81 | $19.26–$48.16 | — |
| The Valley Hospital Paramus, NJ · (201) 447-8000 HIV AB/P24 AG WITH R (LC) File of May 6, 2026 · source file | $185.40 | $309.00 | $19.26–$262.65 | 40% |
| Brooklyn Hospital Center at Downtown Campus Brooklyn, NY · (718) 250-8000 HIV-1 AG W/HIV-1&-2 AB AG IA File of Jul 27, 2026 · source file | $197.85 | $197.85 | $19.26–$48.16 | — |
| New York Community Hospital of Brooklyn Brooklyn, NY · (718) 692-5302 HIV-1 AG W/HIV-1 & HIV-2 AB File of Apr 1, 2026 · source file | $202.70 | $202.70 | — | — |
| Chilton Medical Center Pompton Plains, NJ · (973) 831-5000 Ia Hiv 1 Ag 2 Hiv 1 & Hiv 2 Ab Sng Result File of Apr 1, 2026 · source file | $246.47 | $2,276.00 | — | 89% |
| St Johns Riverside Hospital Park Care Pavillion Yonkers, NY · (914) 964-4444 HIV-1 AG W/HIV-1&-2 AB AG IA File of Mar 27, 2026 · source file | $246.50 | $290.00 | $22.88–$3,783.00 | 15% |
| Morristown Medical Center Morristown, NJ · (973) 971-5450 Ia Hiv 1 Ag 2 Hiv 1 & Hiv 2 Ab Sng Result File of Apr 1, 2026 · source file | $267.48 | $2,270.00 | — | 88% |
| New York Eye and Ear Infirmary of Mount Sinai New York, NY · (212) 979-4000 NEEDLESTICK: HIV-1 AG W/HIV-1 File of Apr 1, 2026 · source file | $273.24 | $303.60 | — | 10% |
| CentraState Medical Center Freehold Township, NJ · (732) 294-7012 Ia Hiv 1 Ag 2 Hiv 1 & Hiv 2 Ab Sng Result File of Apr 1, 2026 · source file | $275.66 | $1,893.00 | — | 85% |
| Westchester Medical Center Valhalla, NY · (914) 493-7000 HIV-1 AG W/HIV-1&2 AB AG IA File of Jul 28, 2026 · source file | $288.00 | $288.00 | $13.65–$288.00 | — |
| Montefiore Medical Center Bronx, NY · (718) 920-4321 CHG IAAD IA HIV-1 AG W/HIV-1 & HIV-2 ANTBDY SINGLE+1 more line at this price File of Sep 28, 2026 · source file | $292.50 | $450.00 | $15.20–$207.81 | 35% |
| Good Samaritan Hospital Suffern, NY · (914) 368-5000 HIV Ab/p24 Ag with Reflex File of Jun 29, 2026 · source file | $383.00 | $383.00 | $13.65–$325.55 | — |
| Memorial Hospital for Cancer and Allied Diseases West Harrison, NY HC Hiv Ag/Ab File of Dec 1, 2025 · source file | $396.00 | $396.00 | $13.13–$356.40 | — |
| Memorial Hospital for Cancer and Allied Diseases Middletown, NJ HC Hiv Ag/Ab File of Dec 1, 2025 · source file | $396.00 | $396.00 | $96.32–$356.40 | — |
| Memorial Hospital for Cancer and Allied Diseases New York, NY HC Hiv Ag/Ab File of Dec 1, 2025 · source file | $396.00 | $396.00 | $13.13–$356.40 | — |
| Memorial Hospital for Cancer and Allied Diseases Basking Ridge, NJ HC Hiv Ag/Ab File of Dec 1, 2025 · source file | $396.00 | $396.00 | $96.32–$356.40 | — |
| Saint Peters University Hospital New Brunswick, NJ · (732) 745-8600 EIA QL HIV-1 & HIV-2 ANTI File of Nov 19, 2025 · source file | $906.00 | $919.00 | $13.00–$919.00 | 1% |
Outpatient: lowest $18.67, median $27.69, highest $906.00 — a 48.5× difference within the same market.
As an inpatient, the same code is billed by 30 facilities here, median $28.90. Inpatient and outpatient prices are not comparable and are kept on separate pages: the inpatient charge covers admission, not the same purchase.
Cash or insurance?
At 57 of 68 hospitals that publish insurer rates for this code here, the cash price is below the highest rate a health plan has negotiated, and at 10 it is below every plan's rate. If you have insurance but have not met your deductible, you usually pay your plan's negotiated rate, which falls somewhere in the "Insurers pay" column. Paying cash can cost less, but a cash payment usually does not count toward your deductible. Ask the hospital for both numbers before you book.
What HIV test (4th generation) is, what the price covers and why prices differ: HIV test (4th generation) explained.